YS Engine Parts : YS FZ91 - Central Hobbies

Central Hobbies
1401 Central Avenue
Billings, MT 59102

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Exploded View of the YS FZ91 engine:

Chart#: 0 Part#: YSE2740
Description: Needle Valve Assembly-Replaces older needle valve and seat in all 120's and 91's
Pkg Qty: 1 Price: $37.35

Chart#: 0 Part#: YSE0405
Description: Check Valve
Pkg Qty: 1 Price: $10.95

Chart#: 0 Part#: YSE4335
Description: Muffler Set w/ pipe and lock nuts
Pkg Qty: 1 Price: $52.75

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

Chart#: 0 Part#: YSE4355
Description: O-Ring Set
Pkg Qty: 1 Price: $21.95

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

Chart#: 1 Part#: YSE1571
Description: YS 91AC Crankcase-Use with YSE1581 Cylinder Head
Pkg Qty: 1 Price: $65.95

Chart#: 2 Part#: YSE1581
Description: Cylinder Head DISCONTINUED
Pkg Qty: 1 Price: $115.50

Chart#: 3 Part#: YSE1590
Description: Intake Valve
Pkg Qty: 1 Price: $21.95

Chart#: 4 Part#: YSE1600
Description: Exhaust Valve
Pkg Qty: 1 Price: $19.95

Chart#: 5 Part#: YSE0540
Description: Valve Spring Set
Pkg Qty: 2 Price: $8.75

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

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

Chart#: 8 Part#: YSE1611
Description: Cylinder Head Gasket
Pkg Qty: 1 Price: $6.55

Chart#: 9 Part#: YSE1220
Description: Drive Washer Spacer
Pkg Qty: 1 Price: $3.85

Chart#: 11 Part#: YSE1630
Description: Head Screws
Pkg Qty: 4 Price: $6.55

Chart#: 12 Part#: YSE1640
Description: Valve Cover
Pkg Qty: 1 Price: $16.45

Chart#: 13 Part#: YSE1650
Description: Valve Cover Gasket
Pkg Qty: 1 Price: $3.85

Chart#: 14 Part#: YSE1660
Description: Valve Cover Screws
Pkg Qty: 2 Price: $3.85

Chart#: 15 Part#: YSE1670
Description: Rear Air Chamber
Pkg Qty: 1 Price: $17.55

Chart#: 17 Part#: YSE1690
Description: Air Chamber Screws
Pkg Qty: 2 Price: $5.45

Chart#: 19 Part#: YSE4320
Description: Crankshaft
Pkg Qty: 1 Price: $76.95

Chart#: 20 Part#: YSE1720
Description: Rear Bearing
Pkg Qty: 1 Price: $24.95

Chart#: 21 Part#: YSE0695
Description: Front Bearing
Pkg Qty: 1 Price: $20.85

Chart#: 22 Part#: YSE1730
Description: Front Bearing Oil Seal YSE2240 can be used as substitute
Pkg Qty: 1 Price: $12.05

Chart#: 23 Part#: YSE4325
Description: Drive Washer
Pkg Qty: 1 Price: $24.15

Chart#: 24 Part#: YSE4330
Description: Drive Washer Retainer
Pkg Qty: 1 Price: $7.65

Chart#: 25 Part#: YSE0425
Description: Prop Washer
Pkg Qty: 1 Price: $3.25

Chart#: 26 Part#: YSE6145
Description: Propeller Nut Set, replaces YSE0830
Pkg Qty: 2 Price: $13.15

Chart#: 27 Part#: YSE1760
Description: Piston
Pkg Qty: 1 Price: $54.95

Chart#: 28 Part#: YSE1770
Description: Piston Ring
Pkg Qty: 1 Price: $21.95

Chart#: 29 Part#: YSE1780
Description: Wrist Pin
Pkg Qty: 1 Price: $10.95

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

Chart#: 31 Part#: YSE1790
Description: Rocker Arm Set
Pkg Qty: 2 Price: $38.45

Chart#: 32 Part#: YSE0560
Description: Tappet Adjusting Screw Set
Pkg Qty: 2 Price: $7.70

Chart#: 33 Part#: YSE0565
Description: Valve Adjuster Lock Nut Set
Pkg Qty: 2 Price: $4.35

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

Chart#: 35 Part#: YSE1810
Description: Rocker Arm Screw
Pkg Qty: 1 Price: $2.75

Chart#: 36 Part#: YSE0580
Description: E-Ring Set
Pkg Qty: 2 Price: $3.85

Chart#: 37 Part#: YSE0670
Description: Cam Gear
Pkg Qty: 1 Price: $54.95

Chart#: 38 Part#: YSE1820
Description: Cam Gear Cover
Pkg Qty: 1 Price: $8.75

Chart#: 39 Part#: YSE1830
Description: Cam Gear Cover Oring - See Oring Set YSE6495
Pkg Qty: 1 Price: $2.75

Chart#: 40 Part#: YSE1840
Description: Cam Gear Cover Screws
Pkg Qty: 2 Price: $3.85

Chart#: 41 Part#: YSE0705
Description: Cam Gear Bearings
Pkg Qty: 2 Price: $18.65

Chart#: 42 Part#: YSE0675
Description: Cam Followers
Pkg Qty: 2 Price: $16.45

Chart#: 43 Part#: YSE1850
Description: Push Rods
Pkg Qty: 2 Price: $8.75

Chart#: 44 Part#: YSE1860
Description: Push Rod Covers
Pkg Qty: 2 Price: $10.95

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

Chart#: 46 Part#: YSE1870
Description: Connecting Rod
Pkg Qty: 1 Price: $28.55

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

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

Chart#: 54 Part#: YSE4305
Description: Carburetor Body
Pkg Qty: 1 Price: $61.88

Chart#: 55 Part#: YSE4310
Description: Throttle Barrel
Pkg Qty: 1 Price: $36.25

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

Chart#: 58 Part#: YSE4315
Description: Throttle Barrel Seal
Pkg Qty: 1 Price: $5.45

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

Chart#: 60 Part#: YSE0200
Description: Throttle Arm
Pkg Qty: 1 Price: $7.65

Chart#: 61 Part#: YSE0785
Description: Throttle Stop Screw
Pkg Qty: 1 Price: $3.25

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

Chart#: 63 Part#: YSE2690
Description: Needle Valve
Pkg Qty: 1 Price: $16.45

Chart#: 64 Part#: YSE2695
Description: Needle Valve O-Ring
Pkg Qty: 1 Price: $3.85

Chart#: 65 Part#: YSE2700
Description: Needle Valve Socket
Pkg Qty: 1 Price: $13.15

Chart#: 66 Part#: YSE0775
Description: Needle Valve Socket O-Rings
Pkg Qty: 1 Price: $3.85

Chart#: 67 Part#: YSE2710
Description: Needle Valve Detent
Pkg Qty: 1 Price: $6.05

Chart#: 68 Part#: YSE1970
Description: Carburetor Gasket (available in gasket set)
Pkg Qty: 1 Price: $0.00

Chart#: 69 Part#: YSE2080
Description: Carburetor Screws
Pkg Qty: 2 Price: $3.50

Chart#: 70 Part#: YSE1990
Description: Regulator Body
Pkg Qty: 1 Price: $43.95

Chart#: 71 Part#: YSE0195
Description: Regulator Adjusting Screw
Pkg Qty: 1 Price: $3.95

Chart#: 72 Part#: YSE0725
Description: Regulator Adjusting Screw O-Ring
Pkg Qty: 1 Price: $2.15

Chart#: 73 Part#: YSE2000
Description: Diaphragm for YS91 and YS110 made before 03/2006
Pkg Qty: 1 Price: $3.85

Chart#: 74 Part#: YSE0176
Description: Plunger
Pkg Qty: 1 Price: $3.85

Chart#: 75 Part#: YSE0180
Description: Plunger Spring
Pkg Qty: 1 Price: $3.85

Chart#: 76 Part#: YSE0750
Description: Regulator Screws
Pkg Qty: 2 Price: $4.95

Chart#: 77 Part#: YSE0710
Description: Fuel Nipples
Pkg Qty: 4 Price: $9.95

Chart#: 78 Part#: YSE4340
Description: Muffler only
Pkg Qty: 1 Price: $39.95

Chart#: 79 Part#: YSE4345
Description: Exhaust Pipe only
Pkg Qty: 1 Price: $14.25

Chart#: 80 Part#: YSE4350
Description: Exhaust Stack Lock Nuts
Pkg Qty: 2 Price: $9.08

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