921513-0430 Tohatsu SCREW

Accidental engine starting can cause injury or death to personnel working on the equipment.To avoid accidental engine starting, disconnect the battery cable from the negative (−) battery terminal. Completely tape all metal surfaces of the disconnected battery cable end in order to prevent contact with other metal surfaces which could activate the engine electrical system.Place a Do Not Operate tag at the Start/Stop switch location to inform personnel that the equipment is being worked on.
Specifications
Table 1
Engine Flywheel Housing Specification
Item Value Actual
Face Runout (Axial Eccentricity) of the Flywheel Housing 0.38 mm (0.015 inch) Introduction
Use this procedure to check the axial and radial runout of the flywheel housing.Required Tools
Table 2
Required Tools
Item Qty Part Number Part Name
T1 1 8T-5096 Tool Gp
T1a 1 7H-1942 Dial Indicator
T1b 1 7H-1945 Holding Rod
T1c 1 7H-1948 Swivel Clamp
T1d 1 8S-2327 Post
T1e 1 8S-2329 Base Face Runout (Axial Eccentricity) of the Flywheel Housing - Check
Illustration 1 g06442987
8T-5096 Dial Indicator Gp
(T1a) 7H-1942 Dial Indicator
(T1b) 7H-1945 Holding Rod
(T1c) 7H-1948 Swivel Clamp
(T1d) 8S-2327 Post
(T1e) 8S-2329 BaseIf using any other method except the method given here, remember that the bearing clearance must be removed to receive the correct measurements.
Fasten Tooling (T1e) to the flywheel so the anvil of Tooling (T1a) will contact the face of the flywheel housing.
Use a rubber mallet and tap the crankshaft toward the rear before the dial indicator is read at each point.
Illustration 2 g00285932
Checking face runout of the flywheel housing
Turn the flywheel while the dial indicator is set at 0.0 mm (0.00 inch) at location (A). Read the dial indicator at locations (B), (C), and (D).
The difference between the lower and higher measurements performed at all four points must not be more than 0.38 mm (0.015 inch). This measurement is the maximum permissible face runout (axial eccentricity) of the flywheel housing.Bore Runout (Radial Eccentricity) of the Flywheel Housing - Check
Illustration 3 g06442992
8T-5096 Dial Indicator Gp
(T1a) 7H-1942 Dial Indicator
(T1b) 7H-1945 Holding Rod
(T1c) 7H-1948 Swivel Clamp
(T1d) 8S-2327 Post
(T1e) 8S-2329 Base
Fasten Tooling (T1e) to the flywheel so the anvil of Tooling (T1a) will contact the bore of the flywheel housing.
Illustration 4 g00285932
Checking bore runout of the flywheel housing
Illustration 5 g00763974
While the dial indicator is in the position at location (C), adjust the dial indicator to 0.0 mm (0.00 inch). Push the crankshaft upward against the top of the bearing. Refer to Illustration 5. Write the measurement for bearing clearance on line 1 in column (C).Note: Write the measurements for the dial indicator with the correct notations. This notation is necessary for making the calculations in the chart correctly.
Divide the measurement from Step 2 by two. Write this number on line 1 in columns (B) and (D).
Turn the flywheel to put the dial indicator at position (A). Adjust the dial indicator to 0.0 mm (0.00 inch).
Turn the flywheel counterclockwise to put the dial indicator at position (B). Write the measurements in the chart.
Turn the flywheel counterclockwise to put the dial indicator at position (C). Write the measurement in the chart.
Turn the flywheel counterclockwise to put the dial indicator at position (D). Write the measurement in the cha