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14 

Section 4 - ADJUSTMENTS & REPAIR 

 

WARNING 

DO NOT attempt any maintenance, adjustments or 
service with engine and blade running. STOP engine 
and blade. Disconnect spark plug wire and secure 
away from spark plug. Engine and components are 
HOT. Avoid serious burns, allow sufficient time for 
all components to cool. 

 
4.3.3. DRIVEN DISC ADJUSTMENT 
 

(Continued From Previous Page) 

2.  Remove driven disc spring from driven disc 
assembly. Loosen connector hex nut. See Figure 4.9. 

 

 

 

FIGURE 4.9 

 

3. Slide driven disc assembly over to 1/8” from 
outside edge of drive disc. Maintaining the 1/8” 
measurement, remove any looseness from the 
linkage.  This can be done by holding the transfer rod 
and applying pressure to the left (as viewed from 
operators position). Then retighten the connector hex 
nut securely. See Figure 4.10. Move ground speed 
control to the first speed position, then back to the 
sixth speed position. Recheck the 1/8” measurement 
described previously.  Reinstall driven disc spring to 
driven disc assembly. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 

 

 

FIGURE 4.10 

 
 

4.3.4.  Replacing Rubber Driven Disc Ring 
 
If the rubber ring is badly chunked or worn down to 
within 1/16” of the metal rim of the driven disc hub, it 
must be replaced.  Install new rubber ring as follows: 
1.  Using a small flat blade screwdriver, free the clip 
from the transfer rod. Then remove the transfer rod 
from the clip and the speed control rod. See Figure 
4.11. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

FIGURE 4.11 

 
 

(Continued on next page) 

 
 
 

 

DRIVE 
DISC 

DRIVEN DISC ASSEMBLY 

DRIVEN 
DISC 
SPRING 

TRANSFER 
ROD 

CONNECTOR 

CONNECTOR 
HEX NUT 

1/8” MEASUREMENT TO 
OUTSIDE EDGE OF 
DRIVE DISC 

DRIVE 
DISC 

SLIDE DRIVEN 
DISC ASSEMBLY 
TOWARD 
OUTSIDE EDGE 

TRANSFER 
ROD 

CONNECTOR HEX NUT 

CONNECTOR 

OUTSIDE 
EDGE 

CONNECTOR 
CLIP 

SPEED CONTROL 
ROD 

TRANSFER ROD 

Summary of Contents for EMRP216017B

Page 1: ...r M Middle Market R Recycling Model 17 Series Designation 21 21 Cutting Width B Briggs Engine Thank you for buying a SNAPPER Product Before operating your Walk Behind read this manual carefully and pa...

Page 2: ...extreme CAUTION when changing directions on slopes DO NOT mow steep slopes or other areas where stability or traction is in doubt 3 Use extra care with grass catchers or other attachments these affect...

Page 3: ...rate engine in enclosed areas Engine exhaust gases contain carbon monoxide a deadly poison MAINTENANCE AND STORAGE 1 DO NOT store mower or fuel container inside where fumes may reach an open flame spa...

Page 4: ...e Annually 10 Engine 10 Air Filter 10 Engine Oil 10 Storage Procedure 10 SECTION 4 ADJUSTMENTS AND REPAIR 11 17 Mower Blade Replacement 11 12 Blade Sharpening 11 12 Wheel Drive Control Adjustment 12 D...

Page 5: ...gure 1 1 shows the essential parts of the SNAPPER WALK BEHIND MOWERS It is recommended that all operators of the mower become thoroughly familiar with the controls parts and operation of the mower bef...

Page 6: ...efer to Engine Owners Manual for specifications 2 1 6 Clean exterior surfaces of cutting deck and engine of any accumulation of spilled fuel dirt grass oil etc Keep engine air intake screen and coolin...

Page 7: ...peed Move ground speed control to the desired speed position See Figure 2 5 2 Start engine Refer to Section Starting Operation 3 Move wheel drive control against handle to engage wheel drive and prope...

Page 8: ...cut up to a maximum of 1 3 of grass blade length and recycle ONLY when grass is dry 1 Set all wheels in the highest cutting position Notch 6 2 Move engine speed control to FAST Rabbit position 3 Move...

Page 9: ...Engine and components are HOT Avoid serious burns allow sufficient time for all components to cool 1 Refer to Engine Manual for proper oil specifications and procedures 2 For simplest cleanest oil ch...

Page 10: ...ore operating mower 3 2 5 CHECK TRANSMISSION POLY V BELT 1 Visually check poly v belt for cracking fraying severed or belt strands exposed If worn or damaged replace belt before operating mower FIGURE...

Page 11: ...ance or has cracks or notch in either tip See Figure 4 1 4 2 Replace with new blade WARNING DO NOT use a cutting blade that shows signs of excessive wear or damage Refer to Section MOWER BLADE REPLACE...

Page 12: ...arance between the inside of the spring hook and the inside of the clutch cable eye with the wheel drive control released See Figure 4 5 FIGURE 4 5 2 To adjust unhook upper spring from cable eye and r...

Page 13: ...ausing slippage clean discs as follows 1 Wipe away any oil or grease with a clean cloth 2 Use either an approved grease solvent or hot soapy water to clean drive disc or driven disc 3 Rinse components...

Page 14: ...e connector hex nut securely See Figure 4 10 Move ground speed control to the first speed position then back to the sixth speed position Recheck the 1 8 measurement described previously Reinstall driv...

Page 15: ...Non Commercial Models IMPORTANT The bearing on these M series Non Commercial machines is staked into the thrust plate The bearing will have to be driven out with a mallet and a large punch A new bear...

Page 16: ...earing 5 Carefully install new O ring over the outside of the new bearing 6 Install bearing holder and secure with screws 7 Install 3 8 hex lock nut FIGURE 4 14 4 4 BELT SERVICE On self propelled mowe...

Page 17: ...16 6 Remove the belt cover located under deck 7 Lift the drive disc up and remove worn belt 8 Loop one end of new belt over engine pulley and insert the other end through slot in deck See Figure 4 15...

Page 18: ...ed transmission 1 Contact authorized SNAPPER dealer Loss Of Traction 2 Engine drive belt broken requires replacement 2 Replace engine drive belt 3 Engine drive belt has jumped off of the pulley 3 Rein...

Page 19: ...Grease Level Pages 9 10 X X Periodic Grease Check Pages 10 X Drive Disc Check for Wear Damage Replacement Page 12 15 X Change oil every 25 hours when operating under heavy load or high temperatures C...

Page 20: ...ne air filter To service the filter read and follow the engine operating and maintenance instructions 6 THROTTLE CONTROL Indicates direction to increase engine RPM Hare decrease engine RPM Tortoise an...

Page 21: ...f the traction control lever Moving the lever toward the handle engages the traction clutch and forward motion starts When the lever is released the clutch disengages and forward motion stops 10 SHIFT...

Page 22: ...ginal purchase date SNAPPER will not be responsible for any installation cost incurred The battery warranty only covers original equipment batteries and does not cover damage to the battery or machine...

Page 23: ...23 NOTES...

Page 24: ...hments If you have any questions about your Snapper product contact your local authorized Snapper dealer or contact Snapper Customer Service at Snapper McDonough GA 30253 Phone 1 800 935 2967 COPYRIGH...

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