The Yamaha turn signal often breaks at the vibration
isolator, which is
the hard rubber cone. When this happens, this cone can be removed and a
substitute part installed.
-Locktite thread locking compound.
-"Shock absorbing chromed mirror mount,
J.C. Whitney catalog 104-1J-07 part #
-#10 bolt and self=locking nut same
approximate length as original pinch bolt.
-3 SAE 3/8 WASHERS.
-10MM self-washering nut, same threads
as J.C. Whitney mirror mount.
1. Disconnect the wires.
2. Remove the turn signal,
3. Spray a liberal amount of WD-40 (or
similar) down along the wires into the stem.
4. Remove the pinch bolt, CAREFULLY
to avoid damaging metal, pry apart the
pinch slot. Apply WD-40 to slot.
5. Rocking and slightly (careful, it has
raised locator line cast in it) turning
the stem, remove the cone and its
attached alloy extension from the
6. Drill an enlarged opening at the end
the slot large enough for the wires to
exit, with a slight extra clearance to
compensate for the pinching stem bolt.
BE CAREFUL NOT TO DAMAGE THE
7. Squeeze some silicone RTV into the
drilled opening, then route the wires
through the opening. Squeeze more
silicone to cover the back of the bulb
base where the wires originate.
8. Press the "Shock absorbing chrome
mirror mount" into the stem, female
thread side first. INSURE THAT THE
PINCH OPENING IS PRIED OPEN
WIDE ENOUGH TO ACCEPT IT
WITHOUT USING TOO MUCH
9 Install a #10 bolt and self-locking
the pinch bolt hole. (Don't use the
original bolt. It needs a clearance slot
10. Carefully wipe off excess silicone. as
some will be pushed out. Dab locktite
on the base of the "...Mirror
mount”, which is now your turn signal
mount. Place 1 SAE 3/8 washer into
place. Dab locktite on it to bond it to
the next washer, wtc, until all 3
washers are stacked and locktited.
11. Dab locktite onto the last washer, the
end of the "...Mirror mount" threads,
and the washer face and threads of
the 10MM nut.
12. Install the turn signal into the original
location, insuring that the SAE 3/8
washers are flush and not onto the
locator pin which is cast into the
mount surface. An off-hole-center
assembly will allow the SAE washes
to clear the locator pin. DO NOT
OVERTIGHTEN THE STEM, AS
APPROXIMATELY 1/2 OF THE 10MM
NUT'S LENGTH WILL ENGAGE.
13.Clean off excess locktite and silicone,
route and connect wires, and smile
when you pass the local Yamaha shop.
Your +/- $7.50-to-$10.00 repair of the
O.E. turn signal saves you from a
VERY expensive alternative.