2005 head buttons have been updated to turbo style, requiring the use of a turbo type glow plug. We recommend using the
following glow plugs:
• FAN10602 – FR21/FR27 turbo glow plug for off-road applications (common aftermarket turbo glow plug is O’Donnell® 97T /
part#ODO97T)
• FAN10604 – FR21/FR27 turbo glow plug for on-road applications (common aftermarket turbo glow plug is O’Donnell® 99T /
part#ODO99T)
If you prefer to use a standard type glow plug, you can obtain our standard head buttons sold separately (part#FAN10439 for
FR21 and FAN10441 for FR27). We recommend using the following glow plugs if you convert to a standard head button:
• FAN10605 – FR21/FR27 standard glow plug for monster truck applications (common aftermarket standard glow plug is
O’Donnell® 100 / part#ODO100)
• FAN10603 – FR21/FR27 standard glow plug for off-road applications (common aftermarket standard glow plug is
O’Donnell® 99 / part#ODO99)
BASELINE NEEDLE SETTINGS UPDATE: We have changed the baseline needle settings, found on page 17, to the
following updated settings:
• High-Speed Needle: 3-1/2 to 3-3/4 turns counter clockwise (CCW) out from closed.
• Low-Speed Needle: See illustration 1 on page 17 of manual, but change the dimension to between 1mm and 1.25mm.
BREAK-IN PROCEDURE UPDATE: We have updated our break-in procedure for better clarification. Please disregard pages
12 through 15 of your manual and follow the new break-in procedure below.
You may find the following break-in steps to be different than what you are normally used to, but it is very important that you
follow our instructions to obtain the best performance and longest engine life.
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