Assembly
Prior to Assembly
Before assembling, make sure you have all the components required for a complete unit. This unit consists of the items shown in Figure 6.
Carefully inspect the engine unit for damaged or loosen bolts. If you find any damage or missing items, check with your dealer.
Engine Unit
EC7500.19
Tool Set | Instruction |
| Manual |
Figure 6
Mounting the Cut-off Wheel
1.Select a
Recommended Cut-off Wheels
Inner bore: 0.78" (20mm), 0.86" (22mm), 1.0" (25.4mm)
Wheels for EC7500
Abrasive: 305mm outer diameter
Diamond: 320mm outer diameter
Wheels for EC7600
Abrasive: 355mm outer diameter
Diamond: 360mm outer diameter
IMPORTANT!
This unit is | Drive Shaft | Collar | ||
equipped with a |
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0.86" (22mm) |
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wheel collar. |
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Wheel adapters |
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for 20mm and |
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25.4mm |
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wheels are |
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located in the | Flange | EC7500.45 | Snap | |
tool set. Before | ||||
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mounting a | EC7500.49 |
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wheel, deter- |
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mine its arbor |
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diameter. If it is | 20mm | 22mm | 25.4mm | |
necessary to | Collar | Collar | Collar | |
replace the |
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collar, remove the snap ring on the arbor, install the correct size arbor collar, and then replace the snap ring.
WARNING!
Use of the incorrect collar size may lead to wheel failure and unit failure that could result in serious injury.
2.Make sure the
3.Insert a hex wrench into the hole in the belt guard to prevent the arbor from turning. See Figure 7.
Belt |
Guard |
Hex |
Wrench |
EC7500.20A |
Figure 7. |
High and Low Speed Needle
The high and low speed needle is fixed and cannot be adjusted.
Spark Plug Maintenance
If the engine becomes hard to start or if idle speed is unstable, inspect the spark plug according to the following procedures.
1.Remove the spark plug. Refer to the procedures on page 13, If the Engine Does Not Start…
2.Clean the electrode with a wire brush. If necessary, adjust the electrode gap. The gap should be 0.024" (0.6mm). See Figure 24.
0.024"
(0.6mm)
Figure 24
Cleaning Cylinder Fins
WARNING!
Before cleaning cylinder fins, make sure the engine is cold.
Dust and debris may accumulate between the cylinder fins and can lead to engine overheating. In order to maintain efficient service, cylinder fins should be cleaned once every month.
Checking the Drive Belt
The transmission belt tends to loosen and wear after a period of operation and should be checked and adjusted regularly according the following procedures. If the belt is worn, torn, cracked, scratched or otherwise damaged, replace it with a new one immediately.
Adjusting Belt Tension (Figure 25)
1.Loosen the two bolts in the belt guard by one turn.
2.Turn the tension screw so the washer aligns with the mark on the clutch cover.
3.Tighten the two bolts in the belt guard.
EC7500.34 |
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Tension | Mark | Bolt | |
Screw | |||
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Clutch | Belt Guard |
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Cover |
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| Washer |
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Figure 25 |
| EC7500.34A | |
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19 |