MBW WS500 - Manual (Page 12)

- 9 -
2. Loosen the three socket head cap screws (#13)
securing the exciter cover (#8) to the exciter housing.
Back the socket head cap screws out about 1/4”.
3. Gently tap on the socket head cap screws with a
rubber mallet to push the exciter cover out of the
exciter housing.
4. Remove the socket head cap screws and the fiber
washers (#11) after the exciter cover is free from the
exciter housing.
5. Remove the bearings (#5) from the exciter housing,
exciter cover, and exciter shaft.
6. Remove the socket head cap screw (#13) securing
the exciter weight (#3) to the exciter shaft (#6).
Exciter Assembly
Refer to Exciter Assembly, page 14.
1. Press a bearing (#5) into the exciter housing (#4) and
exciter cover (#8).
2. Slide the exciter weight (#3) onto the exciter shaft
(#6).
3. Apply a medium strength threadlocker to the socket
head cap screw (#13) and use it to secure the exciter
weight into the exciter shaft.
4. Turn the exciter housing up-side-down and place the
the threaded end of the exciter shaft/weight
assembly into the bearing in the housing.
5. Apply a light coat of grease to the top step of the
exciter cover (#8). Place a new o-ring (#1) onto the
greased step.
6. Apply medium strength thread locker to the threaded
holes in the cover.
7. Line up the mounting holes between the exciter
housing and exciter cover and assemble the exciter
cover to the exciter housing. Take care not to cut the
o-ring. Secure the cover with three socket head cap
screws and fiber washers (#11).
8. Thread the four shockmounts (#7) into the exciter
housing and exciter shaft.
9. Apply medium strength thread locker to the socket
head set screw (#12) and thread it into the exciter
housing.
Engine Mounting Flange & Engine Assembly
Refer to Engine and Engine Mount, page 16
1. Inspect the rubber seal (#9). Remove if there are any
tears or if it is worn. If the rubber seal is in good
condition, skip to step #5.
2. Clean the surfaces of the engine mounting flange
(#4) where the rubber seal was glued.
3. Apply a small bead of Loctite 426 adhesive (MBW
#17885) to the lip on the engine mounting flange.
See Figure 4.
4. Place a new rubber seal onto the engine mounting
flange and hold it in place for 10 seconds to allow the
adhesive to set up.
5. Position the engine mounting flange (#4) so the plug
hole lines up with the socket head set screw (#12,
page 14) on the exciter.
NOTE: Do not use any sealant or adhesive between the
bottom of the rubber seal and the top of the exciter.
6. Set the engine mounting flange in place while turning
the spline shaft (#6) clockwise to thread the shaft into
the center shockmount (#7, page 14) on top of the
exciter housing (#4, page 14). This only needs to be
hand tight.
7. Secure the engine mounting flange with three sealing
washers (#5, page 12) and three hex head cap
screws (#20, page 12).
8. Replace the plug (#1).
9. Place a small bead of 100% silicon sealant around
the engine mounting flange about 1/2” from the top.
Also fill the slot on the engine housing with silicone.
10. Orient the engine (#8) so the fuel tank faces away
from the operating position and slide the engine over
the engine mounting flange.
NOTE: Make sure the engine slides all the way down to
the step on the engine mounting flange. The
engine may have to be lifted and rotated to engage
the splines.
11. Tighten the socket head cap screw (#2) at the base
of the engine.)
12. Reattach the throttle cable (#18, page 12 to the
engine.
APPLY
ADHESIVE
HERE
Figure 4.