Smaller
Opening
(Lower idle
(Lower idle
(Lower idle
(Lower idle
(Lower idle
Speed)
Speed)
Speed)
Speed)
Speed)
TROUBLESHOOTING
If you have trouble starting or keep-
If you have trouble starting or keep-
If you have trouble starting or keep-
If you have trouble starting or keep-
If you have trouble starting or keep-
ing your RTR running, here’s a quick
ing your RTR running, here’s a quick
ing your RTR running, here’s a quick
ing your RTR running, here’s a quick
ing your RTR running, here’s a quick
checklist of what to look for first.
checklist of what to look for first.
checklist of what to look for first.
checklist of what to look for first.
checklist of what to look for first.
If you suspect internal engine damage, refer to your warranty card for service instructions.
If you suspect internal engine damage, refer to your warranty card for service instructions.
If you suspect internal engine damage, refer to your warranty card for service instructions.
If you suspect internal engine damage, refer to your warranty card for service instructions.
If you suspect internal engine damage, refer to your warranty card for service instructions.
Description
Problem
Solution
Engine will not start
Out of Fuel............................................ Refill fuel tank
Contaminated fuel................................. Replace fuel
Glow plug igniter not charged..................Charge Glow igniter
Glow plug bad...................................... Replace glow plug, see “Glow Plug
Problems” section below
Fuel not getting to carbueretor..................Open and close fuel tank lid twice
Engine flooded..................................... See “Flooding” section below
Engine overheating................................ Allow engine to cool, richen fuel
mixture, see “Fuel Mixture” section
below
Carbueretor incorrectly adjusted............... Readjust carburetor, see “Fuel
Mixture” section below
Exhaust blocked ................................... Check exhaust to remove blockage
Air cleaner blocked.................................Check air cleaner, remove blockage
Engine starts, then stalls
Idle speed set too low............................. Adjust idle speed screw, see “Fuel
Mixture” section below
Air bubbles in fuel line............................ Check for leaks in fuel line
Glow plug is fouled................................ Replace glow plug, see “Glow plug
problems” section below
Starter rope will not pull
Engine is flooded................................... See “Flooding” section below
Engine is seized ......................................Examine engine for damage
Glow plug problems.
The glow plug in your
engine must be replaced periodically to maintain peak perfor-
mance and easy starting. Most starting problems or erratic
performance can be traced back to the glow
plug. The easiest way to check for a faulty
glow plug is simply install a new one and
see if the problem goes away. However, to
test the glow plug, remove the glow plug
from the cylinder head with a 5/16” nut
driver. (Make sure there is no dirt on top of
the head which could fall into the engine. Do not lose the
copper gasket which seals the glow plug.) Connect the glow
plug to the glow igniter. All of the coils should glow bright
starter won’t operate, and excess fuel draining from the exhaust
outlet. Remove the glow plug with a 5/16” nut driver and also
remove the air cleaner. Turn the car upside down and pull the
starter a couple of times to drain any excess fuel out of the engine
and carbueretor. Reinstall the glow plug and try starting again.
Fuel mixture.
The fuel mixture is controlled by three
different adjustments on the carburetor, and come pre-set from the
factory (see photos below). Your engine should start and run
slightly rich with these settings (rich is good for break-in). Tuning
Tip: Always make sure you can see some exhaust smoke coming
out of the exhaust outlet during operation. This is a good sign that
enough fuel is getting to the engine.
orange. Sometimes, the first few
coils will not glow, while the rest
are bright orange. This indicates
a bad glow plug or low igniter
battery. Try recharging the
igniter, or replacing the glow
plug.
Flooding.
Symptoms of a
flooded engine include difficulty
in starting, muffled sounds
coming from the exhaust, pull
TROUBLESHOOTING
High Speed Mixture:
High Speed Mixture:
High Speed Mixture:
High Speed Mixture:
High Speed Mixture:
2 1/2 turns out
2 1/2 turns out
2 1/2 turns out
2 1/2 turns out
2 1/2 turns out
FACTORY CARBURETOR SETTINGS
Leaner
(Less Fuel)
Low Speed Mixture:
Low Speed Mixture:
Low Speed Mixture:
Low Speed Mixture:
Low Speed Mixture:
1/16” of screw showing (1.5 mm)
1/16” of screw showing (1.5 mm)
1/16” of screw showing (1.5 mm)
1/16” of screw showing (1.5 mm)
1/16” of screw showing (1.5 mm)
1/16”
Idle Speed:1/32” to 1/16” opening
Idle Speed:1/32” to 1/16” opening
Idle Speed:1/32” to 1/16” opening
Idle Speed:1/32” to 1/16” opening
Idle Speed:1/32” to 1/16” opening
(.8 to 1.5 mm)
(.8 to 1.5 mm)
(.8 to 1.5 mm)
(.8 to 1.5 mm)
(.8 to 1.5 mm)
1/16”
1/32”
1/16”
1/32”
T O
T O
T O
T O
T O
Smaller
Opening
(Lower idle
(Lower idle
(Lower idle
(Lower idle
(Lower idle
Speed)
Speed)
Speed)
Speed)
Speed)
Larger
Opening
(Higher Idle
(Higher Idle
(Higher Idle
(Higher Idle
(Higher Idle
Speed)
Speed)
Speed)
Speed)
Speed)
Larger
Opening
(Higher Idle
(Higher Idle
(Higher Idle
(Higher Idle
(Higher Idle
Speed)
Speed)
Speed)
Speed)
Speed)
Richer
(More Fuel)
Richer
(More Fuel)