How I change a timing chain to a suzuki aereo 2003?

Wow no engine stated of the many.
1.3 L I4; 1.5 L I4; 1.6 L I4; 1.8 L I4; 2.0 L I4; 2.3 L I4; 1.4 L Diesel I4 amazing huh, no engine or COUNTRY stated.
my answer will be USA< as this is a USA forum
and like all cars in USA the engine list it smaller (EPA rule and Bs)
ever seen and FSM book, factory service manual
for any car made, ?
2nd best is always.... here. log in an read?
http://www.scantool.net/software/alldata-diy-1-month-subscription.html

real FSMs. here (official suz. site)
or at suzukipitstop (google it)

no my GUESS,(useless if outside USA totally, mostly)

2.0 or 2.3L: working on engines, not knowing what is there???
here is the teaser answer, no photos , no warnings, etc.

quoted in part, and remove chain only.
exploded view of first timing chain and related components-2.0L and 2.3L engines

1. Before servicing the vehicle, refer to the Precautions Section.
2. Remove engine assembly from vehicle.
3. Remove oil pan.
4. Remove cylinder head cover.
5. Remove timing chain cover as follows:
   • Remove crankshaft pulley bolt. To lock crankshaft pulley, use special tool 09917-68221 (camshaft pulley holder).

• Remove crankshaft pulley. To remove crankshaft pulley, use special tools 09944-36011 and 09926-58010 (steering wheel remover and bearing puller attachment).
• Remove A/C compressor bracket.
• Remove alternator belt idler pulley, water pump pulley and alternator belt tensioner.
• Remove timing chain cover bolts and nut.

1. For reinstallation of timing chain, turn crankshaft so that timing marks on cylinder head and lower crankcase match with those on sprockets as shown in figure.
2. Remove second timing chain as follows:
   • Turn crankshaft to meet following conditions.
     • Key (I) on crankshaft is positioned as shown.
     • Arrow mark on idler sprocket (II) points upward.
     • Marks on sprockets (III) match with marks on cylinder head. Note that this step must be followed for reinstallation of timing chain.
   • Remove timing chain tensioner adjuster No.2 and gasket. To remove them, slacken second timing chain by turning intake camshaft counterclockwise a little while pushing back pad.
   • Remove intake and exhaust camshaft timing sprocket bolts. To remove them, fit a spanner to hexagonal part at the center of camshaft to hold it stationary.
   • Remove camshaft timing sprockets and second timing chain.

1. Remove timing chain guide No.1.
2. Remove timing chain tensioner adjuster No.1.
3. Remove timing chain tensioner.
4. Remove idler sprocket and first timing chain.
5. Remove crankshaft timing sprocket.

Making noise when ever the car is accelerated

To change the Timing Chain the front of the engine has to be completely disassembled including removing all the accessory drives as the Power Steering, Alternator, Water Pump, and Idler Pulley. From their disassemble the front cover including the Crankshaft pulley and then the front cover will come off. When you can get inside the engine you can easily access the drive chain. My question is why do you need to change the chains of which their are Two and Four Gears in that system?