Section 4 - ADJUSTMENTS & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance, service or repairs with the engine running. Stop engine. Stop blade. Engage parking brake. Remove key. Remove spark plug wire from spark plug and secure away from plug. Engine and components are HOT. Avoid serious burns, allow all parts to cool before working on machine. Fuel Filler Cap and Vent must be closed securely to prevent fuel spillage.
4.5BLADE DRIVE BELT REPLACEMENT
Inspect mower drive belt as described in Section “CHECK MOWER DRIVE BELT”. Replace belt if signs of excessive wear and/or damage are present.
4.5.1. BELT REMOVAL
1.Remove mower drive belt cover. Refer to Section “DRIVE BELT COVER REMOVAL”.
2.Remove old belt.
4.5.2. BELT REPLACEMENT
1.Follow WARNING statement found on this page.
2.Check fuel level in tank. If over 3/4 full, remove tank. Refer to Section “REMOVING FUEL TANK”. If 3/4 or less, proceed to next step.
3.Carefully stand Rear Engine Rider on rear bumper.
4.Route new belt through engine belt guide up to engine pulley. See Figure 4.13.
ENGINE PULLEY
ENGINE
BELT
GUIDE
FIGURE 4.13
5.Move transmission shift lever to the neutral (N) position.
6.Rotate clutch yoke (clutch yoke shown in Figure 4.8) out with your hand and work belt between drive disc and rubber driven disc.
7.To clear the primary chain case, move transmission shift lever to the #5 position. Route belt around drive disc and into drive pulley belt groove.
8.Remove idler. See Figure 4.14 and 4.15.
9.Route belt onto spindle pulley. Make sure belt is
inside spindle belt guide and idler belt guide. Route belt as shown in Figure 4.14 or 4.15
10.Reinstall idler removed in Step 8. The idler belt guide tab should be positioned in the hole located on idler arm. Tighten idler pulley bolt securely.
11.Adjust belt guide. See Figure 4.14 or 4.15 for proper
12.Check mower drive belt tension and adjust if necessary (25/28” decks only). Refer to Section
“MOWER DRIVE BELT ADJUSTMENT”.
13.Reinstall mower drive belt cover.
25/28” DECKS
IDLER BELT GUIDE
1/16” NOMINAL
| REMOVE |
|
MOWER | IDLER | ENGINE |
| PULLEY | |
DECK |
| |
|
| |
PULLEY |
|
|
FIGURE 4.14
33” DECKS
33” MODELS
(DUAL IDLER SYSTEM)
1/16” NOMINAL
| REMOVE | ENGINE | |
| PULLEY | ||
SPINDLE | IDLER | ||
| |||
DECK |
|
| |
PULLEY |
|
|
FIGURE 4.15
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