Buy the impact driver, the hammer, and the heat gun when a cross-point screw on a classic Honda will not move. Wait if a fitting bit and a screwdriver already turn it. Reassembly torque is a different tool: the torque wrench starts at 20 ft-lb and does not measure most cover screws. The rest of the first order is the CB garage guide.
What frees the screw
| Job | Use | Skip | Shop |
|---|---|---|---|
| A stuck cross-point screw | Vessel +2, +3, or +4 bit, struck with the flat face | A Phillips bit from a hardware-store set | View A stuck cross-point screw (affiliate) |
| Aluminum gripped on the threads | Heat gun on low, kept moving, around the screw | A torch near the tank or the carb | View Aluminum gripped on the threads (affiliate) |
| The blow on the driver | Flat face of a 16 oz ball peen | The ball end, or a claw hammer beside the cover | View The blow on the driver (affiliate) |
Affiliate Link • Earns Commission
The bit that fits
Honda case screws from this era are JIS. The cross looks like a Phillips and it is not. A Phillips bit cams out under load, and the head becomes a circle you then have to drill. The fix is a bit whose tip fills that cross, driven by a shock instead of a steady twist that climbs out.
Heat, then the blow
Aluminum grows faster than the steel screw. A heat gun on the low end of the dial, kept moving around the boss, is the way to use that. The top of the scale on this gun is paint-stripping heat, past 1000°F. Parked on a cover, that cooks paint and the gasket under it. Keep the nozzle off the fuel tank, the carburetors, the battery, and any wire you are not deliberately shrinking.
The same gun, on that low setting with the reflector nozzle, is also how heat-shrink tubing gets closed. That is a wiring job. It is not a reason to sweep the harness.
Then the impact driver. Fit the bit, hold it in the screw, and strike the end cap with the flat face of the hammer. The driver converts the blow into a sharp twist. It is a removal tool. It is not how you set the final torque when the screw goes back.
The three tools
Sockets for the bolts that are not screws are in the metric socket guide. Once the screw is out and going back, match the shop manual, and remember the torque wrench cannot read a spec under 20 ft-lb.