MBW GPR77 - Manual (Page 10)

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3. Remove the (4) 1/2” hex head cap screws securing
the engine deck to the baseplate.
4. Remove the (4) 1/4” hex head cap screws securing
the beltgaurd to the side plate on the engine deck and
remove the beltgaurd and belt.
5. Now is a good time to inspect and consider replacing
the v-belt.
6. Disconnect the shifter lever/cable from the handle
assembly by removing the (2) 1/4” bolts and nuts
securing the lever to the handle.
7. Lift the engine deck and handle assembly off of the
exciter assembly.
8. Now is a good time to inspect and consider replacing
the shock mounts.
9. Locate the drain plug to the left of the pulley and tilt
the exciter subassembly toward a drain pan to aid in
the removal of all used oil and particles.
WARNING
Danger exciter oil can be scalding hot! Allow
exciter to cool down before draining. Collect all oil
drained and dispose of according to local
legislation.
10. Using a drain pan to catch the used exciter oil,
remove the socket head pipe plug and drain the oil.
(Examine the oil for metal chips as their presence
may indicate future problems.)
11. Tip the exciter subassembly away from the drain pan
and fill the exciter subassembly through the pipe plug
opening. Use only MBW® Exciter Oil. (Oil can be
purchased from your local MBW distributor).
12. Reinstall the socket head pipe plug using sealant.
13. Assemble the engine deck and handle assembly to
baseplate. (Do not tighten bolts)
14. Reconnect the shifter/shifter cable assembly to the
handle assembly.
15. Reinstall the belt and set tension per belt adjustment
procedure.
16. Start the engine and test the shifter for proper plate
motion. Stop engine.
17. Recheck the belt tension.
18. Reinstall the beltgaurd.
Checking the Shifter Cable
Refer to Figure 1 Shifter Cable, page 7.
1. Clean all visible debris from the machine before
servicing.
2. Remove the (4) 1/2” hex head capscrews securing
the engine deck to the baseplate.
3. Remove the (4) 1/4” hex head capscrews securing
the beltguard to the side plate on the engine deck and
remove the beltguard and the belt.
4. Disconnect the shifter handle from the handle by
removing the (2) 1/4” socket head capscrews.
5. Separate the engine deck and the baseplate.
6. Push the shifter lever (item #8) into the forward
position and hold.
7. Turn the exciter pulley counterclockwise and feel for
resistance.
8. Repeat steps 6 & 7 for the reverse position.
9. Repeat steps 6, 7 and 8.
8
9
10
1
2
4
1
3
5
6
7
Figure 1 Shifter Cable