Section 04 ENGINE (2-STROKE)
Subsection 05 (BOTTOM END)
F06D1OA
1
1. Seal in place
Air Compressor
947 DI Engines
Refer to ENGINE MANAGEMENT for procedures.
Crankcase
All Engines
Crankcase halves are factory matched and there-
fore, are not interchangeable or available as single
halves.
717 and 787 RFI Engines
Rotary valve shaft must be installed in crankcase
before closing halves.
CAUTION: Before joining crankcase halves,
make sure that crankshaft gear is well engaged
with rotary valve shaft gear.
717 Engines
Temporarily install armature plate to align
crankcase halves with each other.
CAUTION: Using different types of oil may re-
duce engine component life.
All Models
IMPORTANT: When beginning the application of
the crankcase sealant, the assembly and the first
torquing should be done within 10 minutes. It is
suggested to have all you need on hand to save
time.
NOTE: It is recommended to apply this specific
sealant as described here to get an uniform appli-
cation without lumps. If you do not use the roller
method, you may use your finger to uniformly dis-
tribute the sealant (unlike the Drei Bond sealing
compound, using a finger will not affect the adhe-
sion).
Use the silicone-based Loctite 5910 (P/N 293 800
081) on mating surfaces.
NOTE: The sealant curing time is similar to the
Loctite 518 without using the Primer N.
CAUTION: Do not use Loctite 515 or 518 to seal
crankcase. Do not use Loctite Primer N with
the Loctite 5910. Using these products or non
silicone-based sealant over a previously sealed
crankcase with Loctite 5910 will lead to poor
adhesion and possibly a leaking crankcase.
These products are chemically incompatibles.
Even after cleaning, the Loctite 5910 would
leave incompatible microscopic particles.
Use a plexiglass plate and apply some sealant on
it. Use a soft rubber roller (50 - 75 mm (2 - 3 in))
(available in arts products suppliers for printmak-
ing) and roll the sealant to get a thin uniform coat
on the plate (spread as necessary). When ready,
apply the sealant on crankcase mating surfaces.
F12R17A
148 smr2004-Complete Line Up
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