2.2L OHC AC type 41-981 @ 0.042 in
Haynes manual
.025
A champion RC12YC spark plug is 14mm thread diameter. The torque for this size is 18-22 foot-pounds (25 to 30Neuton·meters)
22 thousands
rj8 is used for a 7hp Tecumseh that powers a 22" yardman snowthrower
22 thousands or the width of a cigarette package.
If it is not written/stamped on the engine, and you don't know the model number of the mower, you could go by the spark plug itself. For instance, a Champion brand CJ8 spark plug is typically set to .030" Most mowers are either .025" or .030" so if you can't find it elsewhere, try one of those.
For a 2001 Toyota Sequoia, the factory and spark plug manufacturer recommended gap is .032" (.813mm). The spark plug manufacturer's recommended torque for flat-seated plugs / aluminum heads is 20-30 n-M (15-22 ft lbs), but double check your owner's manual (if available) to be sure.
Loosen and move the air intake tube for better access. Remove the three 13mm bolts of the spark plug coil rail. Cut the two zip ties of the spark plug coil rail. Remove the spark plugs with 5/8 spark plug socket. Check the gap on the spark plugs. Torque the new plugs in (22 ft/lbs). Replace the spark plug coil rail and air intake tube. heres a link with more step by step info: http://jeep.us41.org/sparkplugs/index.html
0.043 for 2002. Go with a platinum tipped. 14 - 22 Ibs with a torque wrench
.039-.043" gap 14-22 ft/lbs torque
Gap the plugs .038" to .043" and torque the plugs to 22 ft/lbs.
22% of 2000 = .22 * 2000 = 440