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Part No 840099 20 Form No 082206A
MV650SPH Self-Propelled Vacuum Owner’s Manual
IMPELLER REMOVAL
READ all safety instructions before servicing unit.
DISCONNECT spark plug wire before servicing unit.
Tools required:
- 1/2” socket, 3/8” drive
- ratchet, 3/8”
- drive extension, 3/8” drive
- universal joint, 3/8” drive
- pry bar or long screwdriver
- jack stands or similar device adequate to support weight of machine.
1. Wait for engine to cool and disconnect spark plug.
2. Drain fuel and oil from the engine.
3. Remove belt cover by removing 5 screws.
4. Detach drive belt from the transmission pulley by rotating the transmission assembly to relieve belt tension.
5. Remove engine, impeller and mounting plate by removing bolts around outside of housing.
6. Leaving engine fastened to plate, remove impeller bolt and lock washer and slide impeller off crankshaft ( A
puller may be required). CAUTION: Do not drop impeller.
7. If impeller does not slide off crankshaft, place two crowbars between impeller and housing on opposite
sides. Pry impeller away from engine until it loosens. Using a penetrating oil can help loosen a stuck
impeller.
8. If the impeller cannot be loosened, obtain a 1” (25.4mm) longer bolt of the same diameter and thread type as
the impeller bolt. Invert engine and impeller and support engine above ground to prevent recoil damage.
Thread longer bolt by hand into the crankshaft until bolt bottoms. Using a suitable gear or wheel puller
against the bolt head and the impeller back-plate (near the blades), remove impeller from shaft.
9. To reinstall impeller, use a new impeller bolt and lockwasher
10. Tighten impeller bolt. Torque impeller bolt to 50 Ft. Lbs. (68 N.m).
11. Reinstall engine, impeller, and mounting plate onto housing in reverse order of removal.
12. Before connecting spark plug wire, slowly pull engine starting rope to insure that impeller rotates freely.
13. Reconnect spark plug wire.
DRIVE CLUTCH CABLE ADJUSTMENT
READ all safety instructions before servicing unit.
DISCONNECT spark plug wire before servicing unit.
Tools required:
- Ratchet wrench with 6” extension and 3/8” socket.
- Two 10mm open end wrenches.
- Tape measure.
Procedure:
1. Wait for engine to cool and DISCONNECT SPARK PLUG!