2003 Toyota Yaris engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


Toyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m
Toyota gasoline straight-4 1.0 L 1SZ-FE 67 HP	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m
Toyota diesel straight-4 1.4 L 1ND-TV 74 HP	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All other modifications	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreAuxiliary assemblies

expand_moreAir-conditioning compressor


1.5 TS with gasoline straight-4 1.5 L 103 HP engine (2003.1–2005.9)	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAlternator


Clamping screws	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m
Bottom screws	32.45 lbf⋅ft32.45 lbf⋅ft44 N⋅m

expand_moreCarburetion

expand_moreInjection nozzle (injector)


Toyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM	15.49 lbf⋅ft15.49 lbf⋅ft21 N⋅m
Toyota gasoline straight-4 1.0 L 1SZ-FE 67 HP	15.49 lbf⋅ft15.49 lbf⋅ft21 N⋅m
Toyota diesel straight-4 1.4 L 1ND-TV 74 HP	19.18 lbf⋅ft19.18 lbf⋅ft26 N⋅m
Toyota gasoline straight-4 1.3 L 2SZ-FE 86 HP	15.49 lbf⋅ft15.49 lbf⋅ft21 N⋅m
All other modifications	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreCooling system

expand_moreCoolant pump


Toyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Toyota gasoline straight-4 1.0 L 1SZ-FE 67 HP	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
All other modifications	8.11 lbf⋅ft8.11 lbf⋅ft11 N⋅m

expand_moreCoolant pump pulley


Toyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m
Toyota gasoline straight-4 1.0 L 1SZ-FE 67 HP	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m
All other modifications	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreCylinder head

expand_moreCamshaft bearing


Toyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m
Toyota gasoline straight-4 1.0 L 1SZ-FE 67 HP	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m
Toyota diesel straight-4 1.4 L 1ND-TV 74 HP	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m
Toyota gasoline straight-4 1.3 L 2SZ-FE 86 HP	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m

expand_moreAll other modifications


Bearing cover on camshaft pulley	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Remaining bearing caps	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m

expand_moreCylinder head screw minimum diameter


Toyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM	0.34 in0.34 in8.63 mm
Toyota gasoline straight-4 1.0 L 1SZ-FE 67 HP	0.34 in0.34 in8.63 mm
Toyota diesel straight-4 1.4 L 1ND-TV 74 HP	0.45 in0.45 in11.5 mm
Toyota gasoline straight-4 1.3 L 2SZ-FE 86 HP	0.34 in0.34 in8.63 mm
All other modifications	0.29 in0.29 in7.3 mm

expand_moreCylinder head screws

expand_moreToyota gasoline straight-4 1.5 L 1NZ-FE 105 HP

Figure 1. Cylinder head, Cylinder head screws, Toyota gasoline straight-4 1.5 L 1NZ-FE 105 HP.


First stage	21.39 lbf⋅ft21.39 lbf⋅ft29 N⋅m
Oil thread. See figure 1.
Second stage	90°90°90°
Third stage	90°90°90°

expand_moreToyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM


First stage	25.08 lbf⋅ft25.08 lbf⋅ft34 N⋅m
Oil thread.
Second stage	90°90°90°

expand_moreToyota gasoline straight-4 1.0 L 1SZ-FE 67 HP


First stage	25.08 lbf⋅ft25.08 lbf⋅ft34 N⋅m
Oil thread.
Second stage	90°90°90°

expand_moreToyota diesel straight-4 1.4 L 1ND-TV 74 HP


First stage	50.15 lbf⋅ft50.15 lbf⋅ft68 N⋅m
Oil thread. See figure 1.
Second stage	90°90°90°
Third stage	90°90°90°

expand_moreToyota gasoline straight-4 1.3 L 2SZ-FE 86 HP

Figure 2. Cylinder head, Cylinder head screws, Toyota gasoline straight-4 1.3 L 2SZ-FE 86 HP.


First stage	25.08 lbf⋅ft25.08 lbf⋅ft34 N⋅m
See figure 2.
Second stage	180°180°180°

expand_moreAll other modifications

Figure 3. Cylinder head, Cylinder head screws, All other modifications.


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Oil thread. See figure 3.
Second stage	90°90°90°
Third stage	90°90°90°

expand_moreValve cover

expand_moreToyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM


Nuts	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Figure 4. Cylinder head, Valve cover, Toyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM.
Screws	8.11 lbf⋅ft8.11 lbf⋅ft11 N⋅m
See figure 4.

expand_moreToyota gasoline straight-4 1.0 L 1SZ-FE 67 HP


Nuts	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

Screws	8.11 lbf⋅ft8.11 lbf⋅ft11 N⋅m
See figure 4.


Toyota diesel straight-4 1.4 L 1ND-TV 74 HP	8.11 lbf⋅ft8.11 lbf⋅ft11 N⋅m
See figure 5.

expand_moreToyota gasoline straight-4 1.3 L 2SZ-FE 86 HP


Nuts	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Figure 6. Cylinder head, Valve cover, Toyota gasoline straight-4 1.3 L 2SZ-FE 86 HP.
Screws	8.11 lbf⋅ft8.11 lbf⋅ft11 N⋅m
See figure 6.


All other modifications	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreToyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM


First stage	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Second stage	90°90°90°

expand_moreToyota gasoline straight-4 1.0 L 1SZ-FE 67 HP


First stage	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Second stage	90°90°90°

expand_moreToyota gasoline straight-4 1.3 L 2SZ-FE 86 HP


First stage	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Second stage	90°90°90°

expand_moreAll other modifications


First stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Second stage	90°90°90°

expand_moreCrankshaft central screws


Toyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM	95.88 lbf⋅ft95.88 lbf⋅ft130 N⋅m
Toyota gasoline straight-4 1.0 L 1SZ-FE 67 HP	95.88 lbf⋅ft95.88 lbf⋅ft130 N⋅m
Toyota diesel straight-4 1.4 L 1ND-TV 74 HP	125.39 lbf⋅ft125.39 lbf⋅ft170 N⋅m
Replace screws.
Toyota gasoline straight-4 1.3 L 2SZ-FE 86 HP	95.88 lbf⋅ft95.88 lbf⋅ft130 N⋅m
All other modifications	94.41 lbf⋅ft94.41 lbf⋅ft128 N⋅m

expand_moreDrive plate


Toyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM	57.53 lbf⋅ft57.53 lbf⋅ft78 N⋅m
Toyota gasoline straight-4 1.0 L 1SZ-FE 67 HP	57.53 lbf⋅ft57.53 lbf⋅ft78 N⋅m
Toyota gasoline straight-4 1.3 L 2SZ-FE 86 HP	57.53 lbf⋅ft57.53 lbf⋅ft78 N⋅m
All other modifications	64.91 lbf⋅ft64.91 lbf⋅ft88 N⋅m

expand_moreFlywheel

expand_moreToyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM


First stage	23.6 lbf⋅ft23.6 lbf⋅ft32 N⋅m
Second stage	47.2 lbf⋅ft47.2 lbf⋅ft64 N⋅m

expand_moreToyota gasoline straight-4 1.0 L 1SZ-FE 67 HP


First stage	23.6 lbf⋅ft23.6 lbf⋅ft32 N⋅m
Second stage	47.2 lbf⋅ft47.2 lbf⋅ft64 N⋅m

expand_moreToyota gasoline straight-4 1.3 L 2SZ-FE 86 HP


First stage	23.6 lbf⋅ft23.6 lbf⋅ft32 N⋅m
Second stage	57.53 lbf⋅ft57.53 lbf⋅ft78 N⋅m

expand_moreAll other modifications


First stage	36.14 lbf⋅ft36.14 lbf⋅ft49 N⋅m
Second stage	90°90°90°

expand_moreMain bearing

expand_moreToyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM


First stage	34.67 lbf⋅ft34.67 lbf⋅ft47 N⋅m
Second stage	43.52 lbf⋅ft43.52 lbf⋅ft59 N⋅m

expand_moreToyota gasoline straight-4 1.0 L 1SZ-FE 67 HP


First stage	34.67 lbf⋅ft34.67 lbf⋅ft47 N⋅m
Second stage	43.52 lbf⋅ft43.52 lbf⋅ft59 N⋅m

expand_moreToyota diesel straight-4 1.4 L 1ND-TV 74 HP


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Second stage	90°90°90°

expand_moreToyota gasoline straight-4 1.3 L 2SZ-FE 86 HP


First stage	34.67 lbf⋅ft34.67 lbf⋅ft47 N⋅m
Second stage	43.52 lbf⋅ft43.52 lbf⋅ft59 N⋅m

expand_moreAll other modifications


First stage	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Second stage	90°90°90°

expand_moreEngine control

expand_moreCamshaft timing gear

expand_moreToyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM


Variable camshaft control	34.67 lbf⋅ft34.67 lbf⋅ft47 N⋅m
Otherwise	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreToyota gasoline straight-4 1.0 L 1SZ-FE 67 HP


Variable camshaft control	34.67 lbf⋅ft34.67 lbf⋅ft47 N⋅m
Otherwise	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m


Toyota diesel straight-4 1.4 L 1ND-TV 74 HP	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreToyota gasoline straight-4 1.3 L 2SZ-FE 86 HP


Variable camshaft control	34.67 lbf⋅ft34.67 lbf⋅ft47 N⋅m
Otherwise	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m


All other modifications	47.2 lbf⋅ft47.2 lbf⋅ft64 N⋅m


Chain tensioner	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreEngine lubrication

expand_moreOil drain plug


Toyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace sealing rings.
Toyota gasoline straight-4 1.0 L 1SZ-FE 67 HP	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace sealing rings.
All other modifications	28.03 lbf⋅ft28.03 lbf⋅ft38 N⋅m
Replace sealing rings.


Oil filter housing	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Oil pump	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreOil sump

expand_moreToyota gasoline straight-4 1.3 L 2NZ-FE 84 HP


Oil sump lower part	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Oil sump top part	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


All other modifications	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreEngine management


Glow plugs	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m

expand_moreKnock sensor


Toyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM	28.76 lbf⋅ft28.76 lbf⋅ft39 N⋅m
Toyota gasoline straight-4 1.0 L 1SZ-FE 67 HP	28.76 lbf⋅ft28.76 lbf⋅ft39 N⋅m
All other modifications	32.45 lbf⋅ft32.45 lbf⋅ft44 N⋅m


Lambda sensor	32.45 lbf⋅ft32.45 lbf⋅ft44 N⋅m

expand_moreEngine mounting

expand_moreTorque arm


At the gearbox	36.14 lbf⋅ft36.14 lbf⋅ft49 N⋅m
Otherwise	47.2 lbf⋅ft47.2 lbf⋅ft64 N⋅m

expand_moreExhaust system

expand_moreExhaust manifold


Toyota gasoline straight-4 1.0 L 1SZ-FE 64 HP at 6000 RPM, 90 N⋅m at 4100 RPM	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Toyota gasoline straight-4 1.0 L 1SZ-FE 67 HP	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Toyota diesel straight-4 1.4 L 1ND-TV 74 HP	31.72 lbf⋅ft31.72 lbf⋅ft43 N⋅m
All other modifications	19.91 lbf⋅ft19.91 lbf⋅ft27 N⋅m

expand_moreIgnition system


Spark plugs	13.28 lbf⋅ft13.28 lbf⋅ft18 N⋅m

expand_moreStart system


Starter	28.76 lbf⋅ft28.76 lbf⋅ft39 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2003 Toyota Yaris user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Toyota warranty policy for your region. In some regions DIY service may invalidate your warranty.

Maintenance Items

Engine Fastener Tightening Specifications
Front Suspension Fastener Tightening Specifications
Rear Suspension Fastener Tightening Specifications
Transmission Fastener Tightening Specifications

Service Intervals

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Toyota Yaris service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 2003 Toyota Yaris you're not only saving money, but also also improving your technical skills and learning something new.

2003 Toyota Yaris generations

In 2003 Toyota offered 2 generations of the Yaris. Engine fastener tightening specifications may vary in different generations. Be sure that you are looking at the rigt modification.

First generation

NCP1#, NLP10, SCP1#

2003 Toyota Yaris First generation facelift Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

2003 Toyota Yaris generations

First generation

Toyota Yaris First generation facelift model years

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