Section 4 - ADJUSTMENTS & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance, service or repairs with the engine running. Stop engine. 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.
4.1ENGINE ADJUSTMENTS & REPAIR
Refer to the engine owner’s manual for those adjustments and repairs that can be performed by the owner.
4.2IMPELLER REPLACEMENT
The impeller is a wear item. The actual wear rate is dependant on the types of debris the machine has been used to pickup. If the machine develops unusual noise and/or vibration STOP the engine immediately. After allowing the engine to cool, proceed with the following steps.
1.In an open area where fumes can safely dissipate, drain fuel into an approved container.
2.Drain engine oil.
3.Remove sparkplug wire from sparkplug and secure away from sparkplug.
4.With engine still attached, remove engine mounting plate from top of impeller housing.
5.Remove bolt from end of engine crankshaft and remove impeller. NOTE: a puller may be required to remove the impeller from the crankshaft.
6.Inspect the impeller blades, hub keyway, key and crankshaft for wear or damage. Contact your authorized dealer if you have any questions about the impeller or associated parts.
7.Install new impeller onto crankshaft. It is recommended that you use a new key and new crankshaft bolt and washer. Torque bolt to 40 ft- lb.
8.Reinstall engine plate to top of blower housing. Tighten hardware securely.
9.With sparkplug wire disconnected, pull recoil rope slowly, checking to make sure engine and impeller rotates freely.
10.Connect sparkplug wire.
11.Fill engine crankcase to proper level with oil as specified in the engine owner’s manual
12.Add fuel to tank.
4.3IMPELLER HOUSING LINER REPLACEMENT (Commercial Models Only)
The impeller housing liner is a wear item and can be replaced. To inspect the impeller housing and liner you must first carefully follow the WARNING instructions listed on this page. Open up the discharge door and visually inspect the housing and liner (if equipped) for damage and wear. The liner will fit commercial models only and is available through your local authorized dealer.
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