GS R/C
DLA ENGINE OPERATING-INSTRUCTION
MANUAL
04-21-21
Copyrighted Material
Owner’s Manual
All Rights Reserved
03180-10000
Page - 54
DLA 32, 58, 64, 64-I2, 116, 116-I2 & 128cc, 180c, 232cc
Rev. A.05.15
3
Engine runs rough and vibrates strongly
1) Check the propeller balance, 2) Balance
Propeller as needed, 3) Check engine to
firewall mounting bolts for security, 4) Check
tank to engine plumbing for air leaks, 5) Check
sparkplug for carbon build up (an indication
that gas:oil mix is too low or rich with oil) 6)
Check sparkplug gap, 7) Check all bolts for
tightness and security, 8) Make sure the engine
is not mounted in a bias, that is the crankcase is
being twisted by the mounting misalignment,
the ends of the stand-offs should be in the same
plane.
4
Engine does not reach a "normal' high
rpm at full throttle
1) Check carburetor settings, particularly the
High End Mixture Needle Valve, 2) Check to
see that the propeller is NOT larger than
specified in the DLA engine specifications, 3)
Check for engine overheating … a sign that
gas:oil mix is to lean, that is too little oil, 4)
Check ignition timing, 5) Confirm you are using
the correct size muffler, 6) Verify proper gas:oil
mixture.
5
Engine hesitates or pauses when
throttle is transitioned from Low to
High (especially when throttle is
advanced rapidly)
1) Low End Mixture Needle Value is too Lean.
Open (Counterclockwise) ~ 1/16 to 1/8 turn at a
time and test again.
6
Idle rpm is not steady or smooth
1) Low End Mixture Needle Valve is too Rich,
2) Close (Clockwise) ~ 1/16 to 1/8 turn at a
time and test again.
7
Engine Stalls or stops at High or Full
Throttle
1) The High End Mixture Needle Valve is too
lean, 2) Open High Mix 1/16 to 1/8 turns and
test again.
