37
TRACTOR - MODEL NO. YTH23V48 (96043012500), PRODUCT NO. 960 43 01-25
ENGINE
KEY PART
NO. NO. DESCRIPTION
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm
For engine service and replacement parts, call the toll free
number for your engine manufacturer listed below:
Briggs & Stratton 1-800-233-3723
1 – – – – – – Engine Briggs Model No. 445577-
1187-G1 (Order parts from engine
manufacturer)
2 532 14 97-23 Muffler
9 532 19 43-20 Keeper Belt Engine
11 532 40 00-08 Clutch Electric
12 532 40 50-97 Pulley Engine
15 532 41 41-51 Tank Fuel
18 532 43 92-08 Cap Asm
20 532 42 35-02 Control Throttle
21 532 41 63-58 Screw #10 x 0.750 BOS Thread
28 532 40 11-35 Fuel Line
29 532 13 71-80 Spark Arrester Kit
37 532 12 34-87 Clamp Hose
41 532 12 61-97 Washer 1-1/2 OD x 15/32 ID x .250
42 810 04 07-00 Washer Lock 7/16
45 873 51 04-00 Nut Keps Hex 1/4-20 unc
62 532 43 40-17 Shield Heat Muffler
69 532 16 53-91 Gasket
70 532 15 99-55 Tube Exhaust LH
71 532 16 05-89 Tube Exhaust RH
79 532 18 39-06 Screw Socket Head 5/16-18 x 1
81 532 14 84-56 Tube Drain Oil Easy
82 532 42 82-87 Valve Oil Drain
84 817 06 06-20 Screw 3/8-16 x 1-1/4
85 532 17 39-37 Bolt Hex 7/16-20 x 4 Gr. 5
87 532 17 18-77 Bolt 5/16-18 unc x 1 w/Sems
90 817 00 06-16 Screw 3/8-16 x 1
91 532 18 74-95 Bushing
Engine Power Rating Information
The gross power rating for individual gas engine models is labeled in accordance with SAE (Society of Automotive Engi-
neers) code J1940 (Small Engine Power & Torque Rating Procedure), and rating performance has been obtained and cor-
rected in accordance with SAE J1995 (Revision 2002-05). Torque values are derived at 3060 RPM; horsepower values are
derived at 3600 RPM. Actual gross engine power will be lower and is affected by, among other things, ambient operating
conditions and engine-to-engine variability. Given both the wide array of products on which engines are placed and the va-
riety of environmental issues applicable to operating the equipment, the gas engine will not develop the rated gross power
when used in a given piece of power equipment (actual “on-site” or net power). This difference is due to a variety of factors
including, but not limited to, accessories (air cleaner, exhaust, charging, cooling, carburetor, fuel pump, etc.), application
limitations, ambient operating conditions (temperature, humidity, altitude), and engine-to-engine variability. Due to manu-
facturing and capacity limitations, Briggs & Stratton may substitute an engine of higher rated power for this Series engine.
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