Central Hobbies

Orders Only: 1-800-723-5937           Information: 1-406-259-9004
Hours: Mon - Sat 10-6 MST

 
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Central Hobbies
1401 Central Avenue
Billings, MT 59102

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Exploded View of the YS 91-AC engine:

Chart#: 0    Part#: YSE4325
Description: Drive Washer
Pkg Qty: 1    Price: $21.95

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Chart#: 0    Part#: YSE2020
Description: Gasket Set
Pkg Qty: 1    Price: $14.95

Qty Desired:   Add to Cart
Chart#: 0    Part#: YSE0405
Description: Check Valve
Pkg Qty: 1    Price: $9.95

Qty Desired:   Add to Cart
Chart#: 0    Part#: YSE2100
Description: Back Plate Assembly
Pkg Qty: 1    Price: $65.95

Qty Desired:   Add to Cart
Chart#: 0    Part#: YSE2090
Description: O-Ring Set
Pkg Qty: 1    Price: $18.95

Qty Desired:   Add to Cart
Chart#: 1    Part#: YSE1571
Description: YS 91AC Crankcase-Use with YSE1581 Cylinder Head
Pkg Qty: 1    Price: $59.95

Qty Desired:   Add to Cart
Chart#: 2    Part#: YSE1581
Description: Cylinder Head
Pkg Qty: 1    Price: $115.50

Qty Desired:   Add to Cart
Chart#: 3    Part#: YSE1590
Description: Intake Valve
Pkg Qty: 1    Price: $21.95

Qty Desired:   Add to Cart
Chart#: 4    Part#: YSE1600
Description: Exhaust Valve
Pkg Qty: 1    Price: $19.95

Qty Desired:     Out of Stock
Chart#: 5    Part#: YSE0540
Description: Valve Spring Set
Pkg Qty: 2    Price: $7.95

Qty Desired:   Add to Cart
Chart#: 6    Part#: YSE2030
Description: Spring Retainer Set
Pkg Qty: 2    Price: $7.95

Qty Desired:   Add to Cart
Chart#: 7    Part#: YSE2040
Description: Spring Retainer Clips
Pkg Qty: 4    Price: $7.95

Qty Desired:   Add to Cart
Chart#: 8    Part#: YSE1611
Description: Cylinder Head Gasket
Pkg Qty: 1    Price: $5.95

Qty Desired:   Add to Cart
Chart#: 9    Part#: YSE1220
Description: Drive Washer Spacer
Pkg Qty: 1    Price: $3.50

Qty Desired:   Add to Cart
Chart#: 11    Part#: YSE1630
Description: Head Screws
Pkg Qty: 4    Price: $5.95

Qty Desired:     Out of Stock
Chart#: 12    Part#: YSE1640
Description: Valve Cover
Pkg Qty: 1    Price: $14.95

Qty Desired:     Out of Stock
Chart#: 13    Part#: YSE1650
Description: Valve Cover Gasket
Pkg Qty: 1    Price: $3.50

Qty Desired:   Add to Cart
Chart#: 14    Part#: YSE1660
Description: Valve Cover Screws
Pkg Qty: 2    Price: $3.50

Qty Desired:   Add to Cart
Chart#: 15    Part#: YSE1670
Description: Rear Air Chamber
Pkg Qty: 1    Price: $15.95

Qty Desired:   Add to Cart
Chart#: 17    Part#: YSE1690
Description: Air Chamber Screws
Pkg Qty: 2    Price: $4.95

Qty Desired:   Add to Cart
Chart#: 20    Part#: YSE1720
Description: Rear Bearing
Pkg Qty: 1    Price: $24.95

Qty Desired:   Add to Cart
Chart#: 21    Part#: YSE0695
Description: Front Bearing
Pkg Qty: 1    Price: $18.95

Qty Desired:   Add to Cart
Chart#: 22    Part#: YSE1730
Description: Front Bearing Oil Seal
Pkg Qty: 1    Price: $10.95

Qty Desired:   Add to Cart
Chart#: 23    Part#: YSE1740
Description: Drive Washer (Discontinued) Use YSE 4325 & YSE4330
Pkg Qty: 1    Price: $0.00

Qty Desired:     Out of Stock
Chart#: 24    Part#: YSE1750
Description: Shaft Key
Pkg Qty: 1    Price: $3.50

Qty Desired:   Add to Cart
Chart#: 25    Part#: YSE0425
Description: Prop Washer
Pkg Qty: 1    Price: $2.95

Qty Desired:   Add to Cart
Chart#: 26    Part#: YSE6145
Description: Propeller Nut Set, replaces YSE0830
Pkg Qty: 2    Price: $11.95

Qty Desired:   Add to Cart
Chart#: 27    Part#: YSE1760
Description: Piston
Pkg Qty: 1    Price: $49.95

Qty Desired:   Add to Cart
Chart#: 28    Part#: YSE1770
Description: Piston Ring
Pkg Qty: 1    Price: $19.95

Qty Desired:   Add to Cart
Chart#: 29    Part#: YSE1780
Description: Wrist Pin
Pkg Qty: 1    Price: $9.95

Qty Desired:   Add to Cart
Chart#: 30    Part#: YSE0610
Description: Wrist Pin Retainer
Pkg Qty: 2    Price: $7.95

Qty Desired:   Add to Cart
Chart#: 31    Part#: YSE1790
Description: Rocker Arm Set
Pkg Qty: 2    Price: $34.95

Qty Desired:   Add to Cart
Chart#: 32    Part#: YSE0560
Description: Tappet Adjusting Screw Set
Pkg Qty: 2    Price: $7.00

Qty Desired:   Add to Cart
Chart#: 33    Part#: YSE0565
Description: Valve Adjuster Nut Set
Pkg Qty: 2    Price: $3.95

Qty Desired:   Add to Cart
Chart#: 34    Part#: YSE1800
Description: Rocker Arm Shaft
Pkg Qty: 1    Price: $9.95

Qty Desired:   Add to Cart
Chart#: 35    Part#: YSE1810
Description: Rocker Arm Screw
Pkg Qty: 1    Price: $2.50

Qty Desired:   Add to Cart
Chart#: 36    Part#: YSE0580
Description: E-Ring Set
Pkg Qty: 2    Price: $3.50

Qty Desired:   Add to Cart
Chart#: 37    Part#: YSE0670
Description: Cam Gear
Pkg Qty: 1    Price: $49.95

Qty Desired:   Add to Cart
Chart#: 38    Part#: YSE1820
Description: Cam Gear Cover
Pkg Qty: 1    Price: $7.95

Qty Desired:   Add to Cart
Chart#: 40    Part#: YSE1840
Description: Cam Gear Cover Screws
Pkg Qty: 2    Price: $3.50

Qty Desired:   Add to Cart
Chart#: 41    Part#: YSE0705
Description: Cam Gear Bearings
Pkg Qty: 2    Price: $16.95

Qty Desired:   Add to Cart
Chart#: 42    Part#: YSE0675
Description: Cam Followers
Pkg Qty: 2    Price: $14.95

Qty Desired:   Add to Cart
Chart#: 43    Part#: YSE1850
Description: Push Rods
Pkg Qty: 2    Price: $7.95

Qty Desired:   Add to Cart
Chart#: 44    Part#: YSE1860
Description: Push Rod Covers
Pkg Qty: 2    Price: $9.95

Qty Desired:   Add to Cart
Chart#: 45    Part#: YSE0690
Description: Pushrod Cover O-Ring, Available in O-Ring set above
Pkg Qty: 0    Price: $0.00

Qty Desired:     Out of Stock
Chart#: 46    Part#: YSE1870
Description: Connecting Rod
Pkg Qty: 1    Price: $25.95

Qty Desired:   Add to Cart
Chart#: 52    Part#: YSE1930
Description: Back Plate Gasket -Order Gasket Set YSE2020 above
Pkg Qty: 0    Price: $0.00

Qty Desired:     Out of Stock
Chart#: 53    Part#: YSE1940
Description: Back Plate Screws
Pkg Qty: 4    Price: $5.95

Qty Desired:   Add to Cart
Chart#: 55    Part#: YSE1960
Description: Throttle Barrel
Pkg Qty: 1    Price: $28.95

Qty Desired:   Add to Cart
Chart#: 56    Part#: YSE2050
Description: Low Speed Adjusting Screw
Pkg Qty: 1    Price: $10.95

Qty Desired:   Add to Cart
Chart#: 58    Part#: YSE2070
Description: Throttle Barrel Seal
Pkg Qty: 1    Price: $3.50

Qty Desired:   Add to Cart
Chart#: 59    Part#: YSE1090
Description: Throttle Barrel Retainer
Pkg Qty: 1    Price: $3.50

Qty Desired:     Out of Stock
Chart#: 60    Part#: YSE0200
Description: Throttle Arm
Pkg Qty: 2    Price: $6.95

Qty Desired:   Add to Cart
Chart#: 61    Part#: YSE0785
Description: Throttle Stop Screw
Pkg Qty: 1    Price: $2.95

Qty Desired:   Add to Cart
Chart#: 62    Part#: YSE0790
Description: Throttle Stop Spring
Pkg Qty: 1    Price: $2.95

Qty Desired:   Add to Cart
Chart#: 63    Part#: YSE2740
Description: Needle Valve Assembly-Replaces older needle valve and seat in all 120's and 91's
Pkg Qty: 1    Price: $33.95

Qty Desired:   Add to Cart
Chart#: 65    Part#: YSE0775
Description: Needle Valve Socket O-Rings
Pkg Qty: 1    Price: $3.50

Qty Desired:   Add to Cart
Chart#: 66    Part#: YSE0385
Description: Needle Valve Spring Detent
Pkg Qty: 1    Price: $3.50

Qty Desired:   Add to Cart
Chart#: 67    Part#: YSE1970
Description: Carburetor Gasket (available in gasket set)
Pkg Qty: 1    Price: $0.00

Qty Desired:     Out of Stock
Chart#: 68    Part#: YSE2080
Description: Carburetor Screws
Pkg Qty: 2    Price: $3.50

Qty Desired:   Add to Cart
Chart#: 69    Part#: YSE1990
Description: Regulator Body
Pkg Qty: 1    Price: $39.95

Qty Desired:   Add to Cart
Chart#: 70    Part#: YSE0195
Description: Regulator Adjusting Screw
Pkg Qty: 1    Price: $3.50

Qty Desired:   Add to Cart
Chart#: 71    Part#: YSE0725
Description: Regulator Adjusting Screw O-Ring
Pkg Qty: 1    Price: $1.95

Qty Desired:   Add to Cart
Chart#: 72    Part#: YSE2000
Description: Diaphragm for YS91 and YS110 made before 03/2006
Pkg Qty: 1    Price: $3.50

Qty Desired:   Add to Cart
Chart#: 73    Part#: YSE0176
Description: Plunger
Pkg Qty: 1    Price: $3.50

Qty Desired:   Add to Cart
Chart#: 74    Part#: YSE0180
Description: Plunger Spring
Pkg Qty: 1    Price: $3.50

Qty Desired:   Add to Cart
Chart#: 75    Part#: YSE0750
Description: Regulator Screws
Pkg Qty: 2    Price: $4.95

Qty Desired:   Add to Cart
Chart#: 76    Part#: YSE0710
Description: Fuel Nipples
Pkg Qty: 4    Price: $9.95

Qty Desired:   Add to Cart
Chart#: 77    Part#: YSE4335
Description: Muffler Set w/ pipe and lock nuts
Pkg Qty: 1    Price: $47.95

Qty Desired:   Add to Cart