Česká Zbrojovka Cz 452 ZKM Instruction Manual

							INSTRUCTION MANUAL 
CZ 452 ZKM 
 
 
  
						

							CZ 452 ZKM  -  INSTRUCTION MANUAL 15 Before handling the firearm read this manual carefully and observe the following safety instructions. Improper and careless handling of the firearm could result in unintentional discharge and could cause injury, death, or damage to property. The same consequences can be caused by any unauthorized modifications or adjustments, corrosion, or use of non-standard or damaged ammunition. In these cases the manufacturer shall not be responsible in any manner whatsoever for the resultant consequences. Before leaving the factory this firearm was tested, carefully inspected, and packed. CZ cannot accept responsibility for product handling while in transit, or upon leaving the factory. Therefore, please examine this rifle carefully at the time of purchase to ensure that it is unloaded and undamaged. This instruction manual should always accompany the firearm and that even in the case of its loan or sale.  
CONTENTS 
SAFETY INSTRUCTIONS 16 
THE CZ 452 ZKM SMALLBORE RIFLE  
DESCRIPTION AND TERMINOLOGY 17 
OPERATING INSTRUCTIONS 19 
Ammunition 19 
Removal of the Magazine 19 
Magazine Loading 19 
Loading of the Rifle 19 
The Safety and its Operation 19 
Unloading of the Rifle 20 
Cocking Indicator Function 20 
Trigger Adjustment 20 
Sight Adjustment 20 
Rifle Scope 20 MAINTENANCE INSTRUCTIONS 21 
Stripping for Cleaning - Disassembly 21 
Disassembly of the Bolt 21 
Cleaning of the Rifle 21 
Cleaning the Barrel Bore  
and the Cartridge Chamber 22 
Cleaning of Other Rifle Parts 22 
Preserving 22 
TROUBLESHOOTING,  
CAUSES AND REMEDIES 23 
ILLUSTRATION AND LIST OF PARTS 24 
TECHNICAL SPECIFICATIONS 26 
LIST OF ILLUSTRATIONS 26  
						

							CZ 452 ZKM  -  INSTRUCTION MANUAL 16 SAFETY INSTRUCTIONS 
 
Always follow the safety instructions for your safety and the safety of others. 
1. Always handle your firearm as if it were loaded. 
2. Never point your firearm at anything you do not intend to shoot. 
3. Never take anyones word that a gun is unloaded. 
4. Always make sure that your firearm is not loaded before laying it down, or handing it to another person. 
5. Always store your rifle unloaded with the striking mechanism released. 
6. Never abuse your firearm by using it for any purpose other than shooting. 
7. Never leave a loaded firearm unattended. 
8. Prior to loading the firearm make sure that barrel bore, chamber, and action are clean and clear of obstructions. Clean 
a dirtied firearm immediately so that it will function properly and safely. 
9. Always use only clean, dry, original high quality commercially manufactured ammunition, which is appropriate to the 
caliber of your firearm. 
10. Never drink alcoholic beverages or take drugs before or during shooting. 
11. Always wear safety glasses and ear protection during shooting whenever possible. 
12. Always keep the safety on when the rifle is loaded with a cartridge in the chamber, until you are ready to fire. Keep 
firearm pointed in a safe direction when disengaging the safety. 
13. Always keep clear and keep others clear of the ejection port. 
14. Never squeeze the trigger or put your finger in the trigger guard until you are aiming at a target and ready to shoot. 
15. Always be absolutely sure of your target, and the area behind it, before you squeeze the trigger. A bullet could travel 
through or past your target up to several hundreds of meters. 
16. Never shoot at a hard surface such as rock, or a liquid surface such as water.  
						

							CZ 452 ZKM  -  INSTRUCTION MANUAL 17 17. Never fire your firearm near an animal unless it is trained to accept the noise. 
18. Never indulge in horseplay while holding your firearm. 
19. Failure to fire: always hold the firearm, keeping it pointed towards the target, or a safe open area and wait 30 seconds 
when the firearm fails to fire. If a hangfire (slow ignition) has occurred, the round will fire within 30 seconds. If the 
round does not fire, remove the magazine, eject the round and examine the primer; if the firing pin indent on the 
primer is light, or non-existent, have the firearm examined by a competent gunsmith. 
20. Always make sure your firearm is not loaded before cleaning, storing or travelling. 
21. Always keep and store your firearm and ammunition in separate locked receptacles out of reach and sight of children 
and untrained people. 
22. Never alter any parts of your rifle as the safety and proper function of your rifle could be seriously compromised. 
23. Always be aware that corrosion, use of damaged ammunition, dropping the rifle on hard surfaces or other coarse 
treatment could cause a damage you may not see. If something like this happens let the firearm to be examined and 
tested by a competent gunsmith. 
 
 
THE CZ 452 ZKM SMALLBORE RIFLE DESCRIPTION AND TERMINOLOGY 
 
The names of basic smallbore rifle parts used in this Instruction Manual are presented in Fig. 1. Nomenclatures of all 
CZ 452 ZKM parts are presented in the section Illustration and List of Parts. 
 
The CZ 452 ZKM is a classic repeating firearm of sturdy design. It is manufactured in a number of versions. 
Characteristic features of all versions are: 
- The CZ 452 ZKM is well-balanced and consequently quick and easy to aim 
- The tangent rear sights are adjustable to a wide range of shooting distances 
- Easy mounting of rifle scope  
						

							CZ 452 ZKM  -  INSTRUCTION MANUAL 18 - Controlling elements which are simple in operation, and easy to reach 
- Adjustable trigger pull 
- Cocking indicator indicates cocking of the striking mechanism 
- Easy disassembly for cleaning and routine maintenance, which can be carried out without any tools 
- A high degree of accuracy when firing 
- A long service life 
- High functional reliability in all environments, even with ammunitions made by various manufacturers, and with 
different types of bullets 
- Threaded muzzle as option for Still or Parker Hale sound moderator attachment 
 
Table of Basic Versions: 
Caliber Surface finish Model 
22 LR 22 WMR 17 HMR Blued Nickeled Threaded for 
sound 
moderator Description Standard ● ● - ● - ● Beech wood stock Lux ● ● - ● ● ● Walnut stock, grip parts provided with checkerings Style ● - - ● ● ● Plastic stock, metal parts nickeled or blued Silhouette ● - - ● - ● Plastic stock, design of this rimfire rifle meets the 
requirements of the IMSSA shooting regulations FS ● - - ● - - Walnut full stock, grip parts provided with checkerings Scout ● - - ● - - Version intended for use by juvenile persons American ● ● ● ● ● - Design has been adapted to the requirements governing 
the USA and Australian markets - without fixed sights Varmint ● - ● ● - - Heavy barrel, stock is provided with a mass-reduced 
rubber buttplate - without fixed sights  
						

							CZ 452 ZKM  -  INSTRUCTION MANUAL 19 OPERATING INSTRUCTIONS 
 
Ammunition 
Use only factory-manufactured ammunition of appropriate caliber, which are in compliance with CIP regulations 
(International Proof Commission for Firearms) or SAAMI (Sporting Arms and Ammunition Manufacturers Institute Inc. of 
the United States). The use of other cartridges could damage the firearm or cause injury to the shooter. 
 
Removal of the Magazine 
Press the magazine catch located at the front of the magazine in a rearward direction (Fig. 2), and remove the 
magazine (single-shot adapter) from the firearm. 
 
Magazine Loading 
With the open end uppermost, grasp the magazine in one hand. Place a cartridge on the magazine follower with the 
base just forward of the retaining lips (Fig. 3). Press the cartridge down and back until it touches the rear flat edge of the 
magazine. Place the next cartridge on top of the previous cartridge and slide in as already described. 
 
Loading of the Rifle 
ALWAYS MAKE SURE THE RIFLE IS POINTED IN A SAFE DIRECTION WHEN LOADING! 
Insert a loaded magazine into the rifle until it is securely caught by the magazine catch. 
Grip the rifle with the left hand by its fore-end, place the buttplate against your body and grip the bolt handle with the 
other hand. Open the bolt by raising the bolt handle and pulling it to the rear to its stop. Then push the bolt vigorously to its 
forward position again and by rotating the bolt handle in a downward direction close the bolt action. This procedure inserts 
the cartridge into the cartridge chamber and cocks the striker mechanism. The rifle is now ready to fire. If you do not 
intend to fire immediately ensure the firearm safety as described further in the section Safety and its Operation. 
When using a single-shot adapter, keep it inserted in the rifle, open the bolt and place the cartridge on the follower. 
Further proceed in the same manner as when employing the magazine. The single-shot adapter is intended for the 
highest accuracy levels of shooting as it protects the bullets against damage during the feeding of cartridges. 
 
The Safety and its Operation 
Shift the safety forward to its Safety-On position (Fig. 4) until the red dot is fully covered. This procedure locks the 
trigger mechanism and the bolt, it is not possible to discharge a cartridge or manipulate the bolt.  
						

							CZ 452 ZKM  -  INSTRUCTION MANUAL 20 Unloading of the Rifle 
ALWAYS MAKE SURE THE RIFLE IS POINTED IN A SAFE DIRECTION! 
- Remove the magazine in the manner as already described 
- Move the safety to its Safety-Off position in order that the bolt can be opened 
- Open the bolt and check to ensure that the cartridge has been extracted from the chamber and ejected 
- Close the bolt 
- Depress the trigger (dry fire) 
 
Cocking Indicator Function 
Cocking of the striking mechanism is indicated by the striker. When the striker is cocked (activated), its rear part 
protrudes (Fig. 5). This protrusion can be checked both by sight and by touch. 
 
Trigger Adjustment 
The trigger pull adjustment is carried out after the removal of the barreled action from the stock and by adjusting the 
trigger rod nut (Fig. 6). 
 
Sight Adjustment 
The CZ 452-2E ZKM small bore rifle sights were sighted-in at the manufacturing plant at a 50 m distance. The tangent 
rear sight is provided with lines for 25 - 200 m aimed shooting in diversion steps of 25 m. 
After depressing the rear sight-locking piece it is possible to shift the slide for the desired range. Windage adjustment 
is achieved after loosing the screw (Fig. 7) on the side you want to shift the point of impact and then tighten the screw on 
the opposite side. A full turn of the screw shifts the point of impact 5 cm (2 in.) at 50 m. Elevation correction is carried out by 
drifting the front sight in a dovetail. The front sight is secured in its place by a screw. The front side base is provided with 
auxiliary lines (Fig. 8). Drifting the front sight by one line shifts the point of impact by 1.5 cm (.6 in.) at 50 m. 
On the CZ 452 ZKM Scout version, windage correction is carried out by shifting the front sight in the transverse groove, 
and securing it in the desired position with an indentation punch. Elevation adjustment is carried out by shifting of the rear 
sight leaf slide (Fig. 10). Shifting the slide by one increment changes the point of impact by 1.25 cm (.5 in.) at 50 m. 
Rifle Scope 
Mounting of the riflescope and sighting-in of the rifle should be entrusted to a qualified gunsmiths workshop.  
						

							CZ 452 ZKM  -  INSTRUCTION MANUAL 21 MAINTENANCE INSTRUCTIONS 
 
Stripping for Cleaning - Disassembly 
1. Remove the magazine. 
2. Shift the safety to its Off position, in order that the bolt can be manipulated. 
3. Open the bolt, and after depressing the trigger to its extreme rear remove the bolt by moving it rearward. 
 
Disassembly of the Bolt 
1. Remove the bolt from the receiver as previously described. 
2. Keeping the firm grip of the bolt body rotate the bolt handle to the right (in the same manner as if closing the bolt in the 
firearm). The main spring is thus released. 
3. Place the striker spring support against a suitable solid object (Fig. 9) and push it a little way into the bolt body. At the 
same time pulling the safety up and out. 
4. After detaching the safety, carefully release the bolt while holding the striker spring support. Be very careful when 
doing this disassembly procedure as the spring support is under main spring tension and its ejection could result in the 
loss of this part, or could cause an injury. 
CAUTION: 
Do not strip your firearm any further. If you assume that your firearm requires adjustment or repair, entrust this work 
to a competent gunsmith in a specialized workshop! 
 
Cleaning of the Rifle 
Clean the rifle 
- Each time you use it 
- If you get your rifle wet 
- As soon as possible after shooting 
- At least once a year in a temperate climate 
- As often as once a month in a tropical climate, or other demanding environment  
						

							CZ 452 ZKM  -  INSTRUCTION MANUAL 22 Cleaning the Barrel Bore and the Cartridge Chamber 
If the firearm has not been fired or if only a few cartridges have been fired, clean the barrel bore and cartridge chamber 
by a clean patch attached to a cleaning rod. Repeat, changing patches, until the last patch comes out clean. 
When the barrel bore is very dirty, apply a gun cleaning solution using a cleaning brush. Let the solvent act for about 10 
minutes (this time may vary depending on the solvent agent being used). Then thoroughly scrub out the barrel bore. 
Subsequently, dry the barrel bore and cartridge chamber with a clean patch and check that all powder residues or fouling 
have been removed. If necessary repeat this procedure. 
The cleaning rod and the brush must be inserted into the barrel bore from the chamber, to prevent wear or damage 
to the muzzle. Pass the brush all the way through the barrel bore before reversing the movement. If you try to change 
directions with the brush in the barrel, the brush could stick. 
 
Cleaning of Other Rifle Parts 
Other parts of the rifle can be cleaned with a dry cloth, old toothbrush, copper bristle brush or a wooden scraper. 
Preserving oil or paraffin oil can be used for proper cleaning. Never use the agent designed for barrel bore cleaning! 
These solutions could remain in the joints, and after some time could cause corrosion. Check that cloth particles or brush 
bristles have not become lodged in any part of the rifle. 
The maintenance of the stock can be carried out with a dry cloth or by some furniture-polishing product. 
 
Preserving 
When the barrel bore, cartridge chamber, and all accessible parts are clean and dry, wipe these parts with a cloth 
soaked in gun oil or apply the oil in a spray. Remove all excess oil. 
Before shooting always wipe the barrel bore dry. At very low temperatures remove the oil from all accessible parts or 
apply a lubricant prepared especially for these conditions. 
Use thick preserving agents for example, preserving grease only for long-term storage in demanding climate 
environments, and before any use of the rifle it must be thoroughly removed from all parts of the firearm.  
						

							CZ 452 ZKM  -  INSTRUCTION MANUAL 23 TROUBLESHOOTING, CAUSES AND REMEDIES 
 
If your firearm is properly used and maintained, malfunctions will rarely occur. However, if such a situation does occur 
please observe the following instructions. 
CAUTION - if a malfunction occurs, the possibility of an unintentional discharge is substantially increased. For this 
reason, when clearing malfunctions, observe the Safety Instructions already mentioned above. Keep the rifle pointed in 
a safe direction, do not turn the rifle against your body or anyone else’s. Do not place your hands in front of the barrel!  
 
Malfunction Possible Cause Remedy A round has not 
been fed into the 
chamber. Magazine is not fully inserted or is damaged. 
The rifle or cartridges are fouled (dirty). Insert magazine properly or change magazine. 
Clean the rifle and cartridges and wipe them dry or 
as the case may be slightly lubricate. Misfire Defective cartridge. 
Firing Pin hole fouled (dirty) or improper 
lubrication agent used during low temperature 
conditions. Follow the Safety Instructions according to point 19. 
Disassemble and clean the firing pin or use low 
temperature lubricant. A shot sounds 
“weak“. The primer has been activated but no powder 
load was inside the cartridge case. Unload the rifle and check that the bullet is not 
lodged in the barrel. Any subsequent shot could 
cause damage to the barrel! The spent case 
has not been 
ejected. Cartridge chamber, extractor or ammunition 
dirty or unsuitable lubricant in low temperature 
environment Clean and wipe the rifle dry or eventually lubricate 
lightly with a suitable agent. Use clean and new 
ammunition. If you cannot clear away any malfunction in the manner described above, entrust the rifle to a competent gunsmith for 
inspection and repair.