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Spare Parts List 

 

Nr. 

Description 

Nr. 

Description 

 

 

 

 

0101 

Crankcase 

0901 

Connecting rod 

0102 

Screw-cap 

0904 

Connecting rod washer 

0202 

Front bearing 2x 

1001 

Crankshaft 

0203 

Rear bearing 

1101 

Drive washer 

0204 

Packing 

1102 

Drive washer key 

0206 

Crankshaft retaining ring 

1103 

Propeller nut 

0301 

Rear cover 

1104 

Propeller washer 

0302 

Rear cover screws-set 

1105 

Propeller screw 

0303 

Rear cover „O“- ring 

1107 

Propeller screws - set 

0304 

Pressure nipple 

 

 

0305 

Pressure nipple gasket 

1301 

Reed valve case 

0306 

Carburetor flange 

1302 

Reed valve 

0307 

Carb. flange gasket 

1303 

Reed valve screws 

0308 

Carb. flange screws - set 

1304 

Reed valve gasket-upper 

0401 

Cylinder 

1305 

Reed valve gasket-bottom 

0402 

Cylinder screws - set 

1306 

Reed valve strap 

0403 

Cylinder nut 

1307 

Carburetor screws 

0404 

Cylinder gasket 

1300 (set)  =1301+1302+1303+1305+1306 

0405 

Exhaust screws - set 

 

 

0406 

Exhaust nut 

1405 

Ignition sensor fixing screws 

0407 

Exhaust flange gasket 

3309 

Spark plug 

0701 

Piston 

3314L 

Electronic ignition unit (3005L) 

0702 

Piston ring 

3314S 

Electronic ignition unit (3005S) 

0801 

Piston pin 

3224X 

Carburetor 

0802 

Piston pin retainer 

 

 

 

 
 
 

Warranty 

 
The MVVS gas engines come with a three-year guarantee against defects in workmanship and 
materials.  Only  original  buyers  of  the  engines  are  eligible  warranty  claimants.  The  warranty 
cannot be transferred with a change in ownership.  
 
This guarantee does not apply to: 
 

-

 

any normal wear that might occur  

-

 

damage arising from accidents  

-

 

damage arising from the use of an unbalanced or damaged propeller 

-

 

damage arising from the use of a propeller that is too small or too big 

-

 

damage arising from the use of low-quality fuel  

-

 

damage arising from the use of other than original spare parts and accessories 

-

 

damage arising from sucking a foreign object into the engine 

-

 

damage arising from any improper use  

 
 
 
For further questions, please contact: 
 

MVVS, spol. s r.o., tr. Kpt. Jarose 35, 602 00 Brno, Czech Republic 
Ph.: +420 545 211 683, fax: +420 545 211 418 
E – Mail: 

[email protected]

   Web: 

www.mvvs.cz

 

 
 

Certificate of Warranty 

 

Date: 

Serial number: 

Buyer’s name and address:

 

Dealer: 

 

Summary of Contents for 50 IRS - V1.3

Page 1: ...ufacturer declines all responsibility for all damages arising from the operation of models and other appliances powered by the MVVS 50 engine 4 Always use original spare parts 5 Never tamper with the engine construction 6 Before each flight always check that all the propeller screws are tightened up and in good condition If you use a spinner check that it is tightened up too When mounting the spin...

Page 2: ...pM on the ground When fixing the propeller to the engine tighten the central nut and each screw several times over Finally tighten the washer screws once again in sequence across each other Fuel Always use unleaded 95 octane petrol mixed in the proportion 40 volume units of petrol to 1 unit of Mobil Racing 2T oil If necessary any quality brand name synthetic oil intended for racing two stroke engi...

Page 3: ... the carburetor Open the adjusting needle L by 5 min and retest acceleration If acceleration is smooth open the needle by another 3 5 min this should be done because the needle was previously set at a boundary value if atmospheric conditions changed during flight the problems might recur If the engine still has bad acceleration open the needle by 10 min 60 degree If the engine s operation does not...

Page 4: ...witched off the choke valve is closed and the throttle valve is about half opened Then give the engine 3 4 turns provided that the carburetor is not flooding If it is flooding only give the engine 1 2 turns 2 Switch the ignition on open the choke valve set the throttle at slightly higher idle speed and give the engine a few counter clockwise flips If even after the fourth flip there is no indicati...

Page 5: ...f the reed valve mind the gasket unscrew four M2 screws and remove the old valves replace them with new ones screw the screws back in and tighten them gently when reassembling make sure you fix the gasket correctly Mechanical faults of the engine must always be commit to a professional service department Service information After each 20 hours of running or 1 year change the spark plug After each ...

Page 6: ... 3309 Spark plug 0701 Piston 3314L Electronic ignition unit 3005L 0702 Piston ring 3314S Electronic ignition unit 3005S 0801 Piston pin 3224X Carburetor 0802 Piston pin retainer Warranty The MVVS gas engines come with a three year guarantee against defects in workmanship and materials Only original buyers of the engines are eligible warranty claimants The warranty cannot be transferred with a chan...

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