JAG Engines PARTS and PRICE LIST
We have accessories available for converting both long and short shaft versions of the 31cc Ryobi and MTD engines. Both are the same except for crankshaft lengths. The string trimmers that have the built-in centrifugal clutch are the long shaft engines (720R). You just can't buy a better running, longer lasting and less expensive engine.
We also sell completely converted and ready to fly engines that have to be the best buy in town. These converted engines include the motor mount, prop hub, machined flywheel, machined back plate, new gaskets and other parts needed to make engine ready for the firewall of your favorite airplane. All engines have been factory run. The 720FR is a factory reconditioned engine meaning they have been sent back to the factory in Arizona and checked out by them.
MTD engines are good long lasting engines with two ball bearings and two needle rod bearings with a chrome cylinder bore and a pumper type carburetor. They are easy starting fuel-efficient engines.
Engines and conversion kits do not include mufflers. Prices are as follows. *
CLICK on the underlined BLUE LETTERING to see a close-up picture of the item.
| Factory reconditioned converted engine | 720FR | $178.00 | ![]() |
Add $15.00 S&H for engines
| JAG Custom 360 deg. Round Muffler | CMUFF | $38.00 | Out of Stock |
| Complete conversion kit for long shaft engines | 720RKIT | $56.00 | ![]() |
| Complete conversion kit for short shaft engines | 700RKIT | $62.00 | ![]() |
| Custom Welded Motor Mount drilled for MTD | 102MM | $30.00 | ![]() |
| C & H Ignition system for the MTD longshaft 720 Wide keyway | C&H720W | $120.00 | |
| C & H Ignition system for the MTD longshaft 720 Narrow keyway | C&H720N | $120.00 | ![]() |
| C & H Ignition system for the MTD shortshaft 700 Wide keyway | C&H700W | $125.00 | ![]() |
| C & H Ignition system for the MTD shortshaft 700 Narrow keyway | C&H700N | $125.00 | ![]() |
| Threaded prop hub for short shaft engines | 700PD | $17.00 | ![]() |
| Prop hub for long shaft engines | 720PD | $11.00 | ![]() |
| Carb spacer, turned aluminum | 135CS | $ 6.00 | ![]() |
| Aluminum turned prop washer | 109PS | $ 3.50 | ![]() |
| Motor mount screws 4 each 10-24x5/8 allen head | 112MM | $ 1.00 | ![]() |
| Prop drive bolt for short shaft engines | 115DB | $ 1.00 | ![]() |
| Gasket set | 135GS | $14.00 | ![]() |
| Fancy Prop Nut for Longshaft only | FPN | $25.00 | ![]() |
| Flywheel machine work (your flywheel) | FWM | $15.00 | Send your Flywheel |
| Backplate rework (your back plate) | BPV | $17.00 | Send your Backplate |
| Add $10.00 for shipping and handling
for parts to US Residents. Complete engines $15.00.
International Shipping extra. California Residents add 7.75% State Sales Tax |
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Click here to email JAG Engines
Snail mail:
JAG Engines
16073 Muscatel
Hesperia, CA 92345
(760) 244-7270