DLA 32cc - Carburetor Tuning and Care; Low & High Needle Settings

GS R/C
DLA ENGINE OPERATING-INSTRUCTION
MANUAL
04-21-21 Copyrighted Material
Owner’s Manual All Rights Reserved 03180-10000
Page - 51 DLA 32, 58, 64, 64-I2, 116, 116-I2 & 128cc, 180c, 232cc Rev. A.05.15
CARBURETOR TUNING and CARE:
A tachometer is required for initial carburetor tuning and is a good idea for subsequent tuning.
Remember to never adjust the carburetor while the engine is running.
The carburetor’s high and low mixture valves have been preset at the factory; however, different
altitudes and climates may require minor adjustments. Turning the mixture adjustment-screws
clockwise, leans the mixture and turning the screws counter-clockwise richens the mixture. If
you get completely out tune, reset the mixture controls as follows:
1. High Adjust: Turn the Needle Valve Screw clockwise until it stops, then counter-
clockwise 1-1/2 to 1-3/4 turns.
2. Low Adjust: Turn the Needle Valve Screw clockwise until it stops, then start at 1-turn
counter-clockwise and advance to 1-1/4 (in 1/16 turns) as needed to start engine.
3. Factory Default Setting for the Low and High Needle Valves:
DLA Engines: Low & High Needle Settings
Engine
32
58
64
64-I2
116
116-I2
128
180
232
360
Low
1.2
1.6
1.5
1.2
1.3
1.6
1.2
1.4
1.2-1.3
1.5
High
1.3
1.5
1.7
1.3
1.5
1.5
1.3
1.5
1.3-2.0
2.6
Idle rpm
2000
1800
1600
1400
1500
1500
1500
15100
1500
1500
Highest
rpm
8000
8000
8000
8000
6500
6500
6400
6200
6200
6200
IMPORTANT: When turning either mixture adjustments clockwise to the stop point, take care
not to over tighten and destroy the value seat. A “TWO-FINGER” hold on the screw driver
provides a light touch and a reasonable feel for the stop point.
Adjust the High Mixture: (Clockwise leans the mix and increases the rpm. Counter-clockwise
richens the mix and generally decreases the rpm.)
1. Start the engine and measure the rpm.
2. Adjust the High mixture to achieve maximum rpm (engine stopped).
3. Turn High mixture counter-clockwise (richen) until the rpm drops to 100 to 2o0 rpm less
than the maximum rpm.
4. Return to idle, and idle for approximately sixty (60) seconds.
a. Be sure the idle rpm is constant and smooth.
b. If the idle is too rich, the rpm may slow until the engine stops.
i. Adjust accordingly.
5. Check the Low to High throttle transition, by somewhat rapidly moving the transmitters
throttle control from idle to maximum.
a. See “Trouble Shooting” if the transition is not smooth and responsive.
Adjusting the Mechanical “Idle” Screw: