User manual DLE61

Adjustment of the Engine

Each DLE Engine has been factory preset. However, elevation

changes will inﬂ uence the performance of the carburetor. To

obtain optimum output of the engine, slight adjustment of the

carburetor maybe necessary. Also, for safety reasons do not make

adjustments to the carburetor while the engine is running.

Engine Functions and Adjustments

1. Choke Control

(the choke should

be used when the

engine is cold)

2. Idle Adjustment

Screw (adjust the

idle speed)/

Throttle

Stop

3. (L) Low-Speed

Needle (adjusts the

fuel/air mixture at

low speeds)

(H) High-Speed

Needle (adjusts the

fuel/air mixture at

high speeds)

Idle Adjustment

Turning the Idle Adjustment Screw (No.3) clockwise will increase

the idle speed. Turning the Idle Screw counter-clockwise will

decrease the idle speed.

Low Speed Needle Adjustment

Turning the Low-Speed Needle (No.4) clockwise will lean the

fuel/air mixture at low speeds. Turning the Low-Speed Needle

(No.4) counter-clockwise will richen the fuel/air mixture at low

speeds. (The default or factory setting of the Low-Speed Needle

is as follows; turn the needle to the fully stop/closed position and

then open the needle 1.25 turns.)