Maintenance
Figure 21
1. Charge pump cap | 2. Loosen 1 1/2 turns only |
1.Stop engine and wait for all moving parts to stop. Raise the rear of the machine up onto jack stands high enough to raise the drive wheels off the ground.
2.Check oil level as stated in Check Hydraulic Oil Level section.
3.Start engine and move throttle control ahead to full throttle position. Move RH motion control lever inward (together) and move both levers forward with equal pressure.
If either drive wheel does not rotate, it is possible to assist the purging of the charge pump by carefully rotating the tire in the forward position.
Note: It is necessary to lightly touch the charge pump cap with your hand to check the pump temperature. If the cap is too hot to touch, turn off engine. The pumps may be damaged if the pump becomes too hot.
If either drive wheel still does not rotate continue with step 4.
4.Thoroughly clean the area around each of the charge pump housings.
5.To “prime” charge pump, loosen two hex socket head capscrews (shown in Figure 21) 1 1/2 turns only. Make sure engine is not running. Lift the charge pump housing upward and wait for a steady flow of oil to flow out from under the housing. Retighten the capscrews. Do this for both pumps.
Note: Hydraulic reservoir can be pressurized up to 5 psi to speed this process.
6.If either drive wheel still does not rotate, stop and repeat steps 4 and 5 above for the respective
pump. If wheels rotate slowly, the system may prime after additional running. Check oil level as stated in Check the Hydraulic Oil Level section.
7.Allow unit to run several minutes after the charge pumps are “primed” with drive system in the full speed position. Check oil level as stated in Check the Hydraulic Oil Level section.
8.Check hydro drive linkage adjustment as stated in Hydro Drive Linkage Adjustment section in Adjustments.
Wheel Hub Nut Torque Specification
Service Interval: After the first 100 hours
Every 500 hours thereafter
Torque the nut on the wheel motor tapered shaft to
Note: Do Not use
Check Spark Arrester (if equipped)
Service Interval: Every 50 hours
WARNING
Hot exhaust system components may ignite gasoline vapors even after the engine is stopped. Hot particles exhausted during engine operation may ignite flammable materials. Fire may result in personal injury or property damage.
Do Not refuel or run engine unless spark arrester is installed.
1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.
2.Wait for muffler to cool.
3.If any breaks in the screen or welds are observed, replace arrester.
4.If plugging of the screen is observed, remove arrester and shake loose particles out of the arrester and clean screen with a wire brush (soak in solvent if necessary). Reinstall arrester on exhaust outlet.
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