ENGINE ADJUSTMENTS. Remote Controls

Transcription

1 ENGINE ADJUSTMENTS Remote Control Wire Travel The remote control wire should measure 2.25 (54 mm) when extended outside the casing (Figure 2). After installation, the travel of the remote control wire must be at least.375 (35 mm) to properly actuate the choke (on Choke-A- Matic systems) and the ignition stop switch (if equipped). Figure 2 Remote Controls Horizontal Models 0000, 20000, Loosen casing clamp screw (A, Figure 22). slack is removed. Figure 23 Figure 22 Vertical Models 97700, Loosen casing clamp screw (A, Figure 23) on intake elbow assembly. 2. Move equipment speed control lever (B) to FAST position. 3. Move control wire and casing at governor bracket to align hole (C) in carburetor control lever with hole in carburetor control bracket. 4. Tighten casing screw. 6

2 Vertical Models 0000, with Primer Carburetors. Loosen casing clamp screw (A, Figure 24, Figure 25). slack is removed. Figure 26 Figure 24 Horizontal and Vertical Models , 20000, , 30000, Loosen casing clamp screw (C, Figure 27). 2. Set throttle control to FAST position. 3. Move governor control rack (D) until holes are aligned (B) between control lever (A) and the control bracket. Figure 25 Vertical Models Series 0000, with Choke-A-Matic Carburetors. Loosen casing clamp screw (A, Figure 26). casing stops moving and choke lever (B) moves to full choke position. Figure 27 7

3 Governor Adjustments A complete governor system adjustment includes a static adjustment, engine warm-up, idle and/or governed idle adjustment, and top noload adjustment. Be sure to complete all steps. Static Adjustment. Loosen screw holding governor lever to governor crank (A, Figure 28) or (C, Figure 29). 2. Rotate throttle linkage from idle position to wide open throttle. Note direction of rotation of the governor arm attached to the throttle linkage. 3. While holding linkage at wide open throttle, use the appropriate tool to rotate the governor shaft (B, Figure 29) until it stops in the direction noted in Step Tighten screw holding governor lever to governor crank per Section 2 - Engine Specifications. 5. Before starting engine, manually actuate throttle linkage to check for binding. Top No Load Adjustment Vertical Models 97700, Place throttle (A, Figure 30 and 3) in FAST position and insert a /8 (3.2 mm) rod (B) through holes in carburetor control bracket and lever. Figure 30 Figure 28 Figure 3 2. Start engine and measure RPM using Tachometer #9200 or #9389. Adjust Top No Load RPM by turning screw (C). 3. Remove /8 (3.2 mm) rod. Figure 29 8

4 Top No Load Adjustment Vertical Models 0000, 20000, with Primer Carburetors. Start engine and run until it reaches 2. Place throttle in FAST position. 3. Using Tachometer #9200 or #9389, and Tang Bender #9229 or #9352, bend Top No Load spring tang to obtain correct Top No Load RPM (Figure 32). 3. Hold throttle lever against idle speed screw and, using Tachometer #9200 or #9389, adjust to 500 RPM. Release throttle lever. 4. Using Tang Bender #9229 or 9352 bend governed idle spring tang to obtain 750 RPM (Figure 34). 5. Remove /8 rod. Figure 32 Idle and Top No Load Adjustment Vertical Models 0000, 20000, with Choke- A-Matic Carburetors. Start engine and run until it reaches 2. Place throttle in SLOW position. Hole in lever will line up with hole in governor control bracket (Figure 33). Insert a /8 rod through holes to lock lever in this position. Figure Move throttle lever to FAST position. Hole in lever will line up with hole in governor control bracket (Figure 35). Insert a /8 rod through holes to lock lever in this position. Figure Using Tang Bender, bend Top No Load spring tang to obtain correct Top No Load RPM. Figure 33 9

5 Idle and Top No Load Adjustment Horizontal and Vertical Models , Start engine and run until it reaches 2. Place throttle in SLOW position. 3. Hold throttle lever against idle speed screw, and, using Tachometer #9200 or #9389, adjust screw to obtain 300 RPM. Release throttle lever. 4. Using Tang Bender #9229 or #9352, bend governed idle spring tang to obtain 750 RPM (Figure 36). Idle and Top No Load Adjustment Vertical Models , 30000, All carburetor mixture adjustments should be made before adjusting governor speeds.. Start engine and run until it reaches 2. Place control lever in idle position. 3. Hold throttle in closed position with finger, adjusting idle speed screw to 200 RPM. 4. Release throttle. 5. Set control to 750 RPM and bend tang (A, Figure 38) until it contacts remote control slide (B). 6. Using Tang Bender #9229 or 9352, bend spring tang to obtain the correct Top No Load RPM. Figure Place throttle in FAST position. 6. Adjust screw to obtain correct Top No Load RPM (Figure 37). Figure 38 Figure 37 Initial Adjustment (All Models). Install idle speed screws and spring. Install idle mixture screw and spring. 2. Turn idle mixture screw in until it just bottoms. 3. Then back out screw -/4 turn. This will permit the engine to start. Final Adjustment (All Models). Install complete air cleaner before starting engine. Start and run engine for five minutes at /2 throttle to bring engine up to 20