Question: What does it cost to service, or rebuild a Rotax 447?
Answer: The simple answer is: Labor plus parts. As you can see below, the biggest variable is parts. Based on Green Sky's twenty plus years experience with Rotax UL series engines, our opinion is: the random replacement of parts, without considering condition, is not mechanically or economically justified. Consequently, we service engines the hard way, inspecting, measuring, grading, and documenting

When you click on an item, it will be posted to a shopping cart where the quantity can be entered or changed as desired. Simply close the shopping cart window to return to this page to add each successive part or service. If you experience problems, check out the HELP section first. If you don't find a solution there, please email, jerry@greenskyadventures.com  or call.

Parts are genuine Rotax UL series replacement parts unless otherwise noted

Part No	Description	Price
TD2	Rebuild Service, Rotax 447 cdi UL	$390.00-April 08	Add to Estimate
PDC447	Powder Coat Service for 447 at rebuild	$195.00-April 08	Add to Estimate
887 380	Crankshaft Assy, Factory New ...complete with rod, main, and wrist pin bearings.  Please Note: This is an Exchange price requiring a special crankshaft replacement form (CRPF) which Green Sky will process for you when we perform your rebuild.  This is a replacement item at 300 hours on the Rotax Maintenance Plan. Field experience indicates the 447 and 503 cranks can be replaced "on condition"	$1092.38-April 08	Add to Estimate
994 869	447 8-bolt Engine Gasket Set 100% replacement item at major service	$167.49-April 08	Add to Estimate
980 436	Fan Belt, 447 Replace "On Condition"	$26.81
832 161	Fan Bearings Replace "On Condition"	$30.70 ea
886 050	Piston Assembly, Standard. Includes rings. Does not include Wrist Pin or Circlips We generally replace piston assemblies "on condition" Piston to Cylinder clearance and ring gaps are determining factors. If a piston is past 50% of it's wear range but the rings are worn excessively, it does not make economic or mechanical sense to replace only the rings, because they constitute nearly half the price of a new piston assembly complete with rings.  Replace "On Condition"	$273.33-April 08 ea
BORE	Cylinder Boring, per hole The 503 cylinders can be bored two oversizes, +.25mm and +.50mm. Generally, a cylinder will not require boring when pistons are replaced for the first time on a particular bore size. Most of the wear occurs on the piston. For instance, with a standard size bore, let's say an engine with 600 hours has piston or ring clearances near "wear out" point. ...Replacing the pistons with new, standard size will most likely bring clearances back very close to new specs.  Even with seizures, a cylinder can usually be repaired without going to the next bore size. Severe trauma, like broken rings, foreign object ingestion, etc. most likely result in boring. .	$55.00 per hole-April 08	Add to Estimate
886 051	Piston Assembly, 1st oversize, 447	$286.99 ea-April 08
886 052	Piston Assembly, 2nd oversize, 447	$286.99 ea-April 08
916 137	Wrist Pin,447, 582these also, can be replaced "on condition" Their wear is not predictable. Replace "On Condition"	$85.17 ea-April 08
915 960	Rectangular ring standard 447 Replace "On Condition"	$58.62 ea-April 08
915 961	Rectangular ring 1st over 447 Replace "On Condition"	$64.97 ea-April 08	Add to Estimate
915 962	Rectangular ring 2nd over 447 Replace "On Condition"	$64.97 ea-April 08	Add to Estimate
915 845	Semitrapezoidal ring standard 447 Replace "On Condition"	$79.38 ea-April 08
915 846	Semitrapezoidal ring 1st over 447 Replace "On Condition"	$72.14 ea
915 847	Semitrapezoidal ring 2nd over 447 Replace "On Condition"	$72.14 ea
832 325	Cageless Wrist Pin Bearing These come as part of the replacement crankshaft exchange package. Replacement is rarely required prior to crankshaft replacement	$43.12	Add to Estimate
866 705	Sparkplug Protector These burgundy colored OEM caps have 5k ohm resistance. We check the R values as a matter of routine during major service. Occasionally we find open resistors. BTW, we apply Silicone Dielectric Compound to all electrical connections serviced. Replace "On Condition"	$22.55	Add to Estimate
866 705A	Sparkplug Protector These BLACK colored OEM caps have 5k ohm resistance. We check the R values as a matter of routine during major service. Occasionally we find open resistors. BTW, we apply Silicone Dielectric Compound to all electrical connections serviced. Replace "On Condition"	$4.95	Add to Estimate
Accessories	Gearboxes
GCCM	Gearbox Service, Type C, Complete gearbox is disassembled, inspected, and updated or repaired as required	$130.00-April 08 + parts	Add to Estimate
995 775	Gasket Set for Type C Gearbox 100% replacement item at major service	$82.89	Add to Estimate
GECM	Gearbox Service, Type E, Complete gearbox is disassembled, inspected, and updated or repaired as required	$150.00 + parts	Add to Estimate
995 776	Gasket Set for Type E 100% replacement item at major service	$84.57	Add to Estimate
GBCM	Gearbox Service, Type B, Complete gearbox is disassembled, inspected, and updated or repaired as required	$65.00-April 08 + parts	Add to Estimate
995 781	Gasket Set for Type B 100% replacement item at major service	$49.99	Add to Estimate
PDCGBX	Powder Coat Service for Gearbox at service	$65.00-April 08	Add to Estimate
Accessories	Carburetor
BING	Bing 54 Carburetor Service Carburetor is totally disassembled, inspected and reassembled. Worn parts are renewed. Occasionally, non-stock jetting is found. Some unique circumstance may warrant this, but it is impossible to know without documentation describing that circumstance. Please indicate on your "Request Service" form, if you want Carb Jetting to remain "as is" or returned to Stock Configuration. The cleaning of severely fouled carburetors (those stored for a prolonged period with decomposing fuel) is charged at hourly rate of $65-April 08	$49.00 ea-April 08	Add to Estimate
BNGRBK	Rebuild Kit for Bing 54  includes the float chamber gasket,  carb top o-ring, float needle, float hinge pin, sieve sleeve, o-ring for airscrew, and rubber grommet. Please Note: the name "rebuild kit" is a bit of misnomer. This does include three common wear items: Cable Grommet, Sieve Sleeve, and Float Needle. The remaining parts are occasionally required.  The float bowl kit, below, also contains a float needle and hinge pin, so there is an overlap in parts	$27.95	Add to Estimate
BNGFBTK	Float Bowel with Floats Kit for Bing 54 kit includes float needle,  float needle clip, float hinge pin, float bracket, float chamber, and floats.	$67.99	Add to Estimate