Try Altech Marketing (under the same roof as MRC). Also be sure which one you have (may not make any diff. but....). The "Standard" 1.20 has the "120 4C" stamped into the case, The "R120" has the "120 4C" cast into the case (raised) and a larger crankshaft. They will send you a copy of the manual (they did for me, but can't find it!).